diff --git a/contrib/minizip/MiniZip64_Changes.txt b/contrib/minizip/MiniZip64_Changes.txt
index 13a1bd9..3759468 100644
--- a/contrib/minizip/MiniZip64_Changes.txt
+++ b/contrib/minizip/MiniZip64_Changes.txt
@@ -1,5 +1,5 @@
 
-MiniZip 1.1 was derrived from MiniZip at version 1.01f
+MiniZip 1.1 was derived from MiniZip at version 1.01f
 
 Change in 1.0 (Okt 2009)
  - **TODO - Add history**
diff --git a/contrib/minizip/ioapi.h b/contrib/minizip/ioapi.h
index f6cc81b..bb2ad3c 100644
--- a/contrib/minizip/ioapi.h
+++ b/contrib/minizip/ioapi.h
@@ -82,7 +82,7 @@
 #include "mz64conf.h"
 #endif
 
-/* a type choosen by DEFINE */
+/* a type chosen by DEFINE */
 #ifdef HAVE_64BIT_INT_CUSTOM
 typedef  64BIT_INT_CUSTOM_TYPE ZPOS64_T;
 #else
diff --git a/contrib/minizip/miniunz.c b/contrib/minizip/miniunz.c
index 52b0909..4bb080b 100644
--- a/contrib/minizip/miniunz.c
+++ b/contrib/minizip/miniunz.c
@@ -192,7 +192,7 @@
            "  -l  list files\n" \
            "  -d  directory to extract into\n" \
            "  -o  overwrite files without prompting\n" \
-           "  -p  extract crypted file using password\n\n");
+           "  -p  extract encrypted file using password\n\n");
 }
 
 static void Display64BitsSize(ZPOS64_T n, int size_char) {
@@ -248,7 +248,7 @@
         if (file_info.uncompressed_size>0)
             ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size);
 
-        /* display a '*' if the file is crypted */
+        /* display a '*' if the file is encrypted */
         if ((file_info.flag & 1) != 0)
             charCrypt='*';
 
@@ -574,7 +574,7 @@
 #        endif
 
         strncpy(filename_try, zipfilename,MAXFILENAME-1);
-        /* strncpy doesnt append the trailing NULL, of the string is too long. */
+        /* strncpy doesn't append the trailing NULL, of the string is too long. */
         filename_try[ MAXFILENAME ] = '\0';
 
 #        ifdef USEWIN32IOAPI
diff --git a/contrib/minizip/minizip.c b/contrib/minizip/minizip.c
index f0480f2..f458c85 100644
--- a/contrib/minizip/minizip.c
+++ b/contrib/minizip/minizip.c
@@ -110,7 +110,7 @@
       len = MAXFILENAME;
 
     strncpy(name, f,MAXFILENAME-1);
-    /* strncpy doesnt append the trailing NULL, of the string is too long. */
+    /* strncpy doesn't append the trailing NULL, of the string is too long. */
     name[ MAXFILENAME ] = '\0';
 
     if (name[len - 1] == '/')
@@ -311,7 +311,7 @@
 
         zipok = 1 ;
         strncpy(filename_try, argv[zipfilenamearg],MAXFILENAME-1);
-        /* strncpy doesnt append the trailing NULL, of the string is too long. */
+        /* strncpy doesn't append the trailing NULL, of the string is too long. */
         filename_try[ MAXFILENAME ] = '\0';
 
         len=(int)strlen(filename_try);
diff --git a/contrib/minizip/unzip.c b/contrib/minizip/unzip.c
index 8d010c5..c1c2986 100644
--- a/contrib/minizip/unzip.c
+++ b/contrib/minizip/unzip.c
@@ -49,12 +49,12 @@
         Copyright (C) 2007-2008 Even Rouault
 
 
-        Oct-2009 - Mathias Svensson - Removed cpl_* from symbol names (Even Rouault added them but since this is now moved to a new project (minizip64) I renamed them again).
+  Oct-2009 - Mathias Svensson - Removed cpl_* from symbol names (Even Rouault added them but since this is now moved to a new project (minizip64) I renamed them again).
   Oct-2009 - Mathias Svensson - Fixed problem if uncompressed size was > 4G and compressed size was <4G
                                 should only read the compressed/uncompressed size from the Zip64 format if
                                 the size from normal header was 0xFFFFFFFF
-  Oct-2009 - Mathias Svensson - Applied some bug fixes from paches recived from Gilles Vollant
-        Oct-2009 - Mathias Svensson - Applied support to unzip files with compression mathod BZIP2 (bzip2 lib is required)
+  Oct-2009 - Mathias Svensson - Applied some bug fixes from patches received from Gilles Vollant
+  Oct-2009 - Mathias Svensson - Applied support to unzip files with compression method BZIP2 (bzip2 lib is required)
                                 Patch created by Daniel Borca
 
   Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer
@@ -153,7 +153,7 @@
     ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */
     ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/
     zlib_filefunc64_32_def z_filefunc;
-    voidpf filestream;        /* io structore of the zipfile */
+    voidpf filestream;        /* io structure of the zipfile */
     uLong compression_method;   /* compression method (0==store) */
     ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
     int   raw;
@@ -166,7 +166,7 @@
 {
     zlib_filefunc64_32_def z_filefunc;
     int is64bitOpenFunction;
-    voidpf filestream;        /* io structore of the zipfile */
+    voidpf filestream;        /* io structure of the zipfile */
     unz_global_info64 gi;       /* public global information */
     ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
     ZPOS64_T num_file;             /* number of the current file in the zipfile*/
@@ -355,11 +355,11 @@
 #endif
 
 /*
-   Compare two filename (fileName1,fileName2).
-   If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp)
-   If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi
+   Compare two filenames (fileName1,fileName2).
+   If iCaseSensitivity = 1, comparison is case sensitive (like strcmp)
+   If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi
                                                                 or strcasecmp)
-   If iCaseSenisivity = 0, case sensitivity is defaut of your operating system
+   If iCaseSensitivity = 0, case sensitivity is default of your operating system
         (like 1 on Unix, 2 on Windows)
 
 */
@@ -561,9 +561,9 @@
     uLong   uL;
 
     uLong number_disk;          /* number of the current dist, used for
-                                   spaning ZIP, unsupported, always 0*/
+                                   spanning ZIP, unsupported, always 0*/
     uLong number_disk_with_CD;  /* number the the disk with central dir, used
-                                   for spaning ZIP, unsupported, always 0*/
+                                   for spanning ZIP, unsupported, always 0*/
     ZPOS64_T number_entry_CD;      /* total number of entries in
                                    the central dir
                                    (same than number_entry on nospan) */
@@ -810,7 +810,7 @@
     return UNZ_OK;
 }
 /*
-   Translate date/time from Dos format to tm_unz (readable more easilty)
+   Translate date/time from Dos format to tm_unz (readable more easily)
 */
 local void unz64local_DosDateToTmuDate(ZPOS64_T ulDosDate, tm_unz* ptm) {
     ZPOS64_T uDate;
@@ -1607,7 +1607,7 @@
   buf contain buffer where data must be copied
   len the size of buf.
 
-  return the number of byte copied if somes bytes are copied
+  return the number of byte copied if some bytes are copied
   return 0 if the end of file was reached
   return <0 with error code if there is an error
     (UNZ_ERRNO for IO error, or zLib error for uncompress error)
diff --git a/contrib/minizip/unzip.h b/contrib/minizip/unzip.h
index 7b9884d..1410584 100644
--- a/contrib/minizip/unzip.h
+++ b/contrib/minizip/unzip.h
@@ -154,11 +154,11 @@
                                             const char* fileName2,
                                             int iCaseSensitivity);
 /*
-   Compare two filename (fileName1,fileName2).
-   If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp)
-   If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi
+   Compare two filenames (fileName1,fileName2).
+   If iCaseSensitivity = 1, comparison is case sensitive (like strcmp)
+   If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi
                                 or strcasecmp)
-   If iCaseSenisivity = 0, case sensitivity is defaut of your operating system
+   If iCaseSensitivity = 0, case sensitivity is default of your operating system
     (like 1 on Unix, 2 on Windows)
 */
 
@@ -304,7 +304,7 @@
                                          uLong commentBufferSize);
 /*
   Get Info about the current file
-  if pfile_info!=NULL, the *pfile_info structure will contain somes info about
+  if pfile_info!=NULL, the *pfile_info structure will contain some info about
         the current file
   if szFileName!=NULL, the filemane string will be copied in szFileName
             (fileNameBufferSize is the size of the buffer)
@@ -384,7 +384,7 @@
   buf contain buffer where data must be copied
   len the size of buf.
 
-  return the number of byte copied if somes bytes are copied
+  return the number of byte copied if some bytes are copied
   return 0 if the end of file was reached
   return <0 with error code if there is an error
     (UNZ_ERRNO for IO error, or zLib error for uncompress error)
diff --git a/contrib/minizip/zip.c b/contrib/minizip/zip.c
index 7b559b7..ac4e243 100644
--- a/contrib/minizip/zip.c
+++ b/contrib/minizip/zip.c
@@ -14,7 +14,7 @@
    Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file archives
    Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get better overview of some functions.
    Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra field data from its ZIP64 data
-                                 It is used when recreting zip archive with RAW when deleting items from a zip.
+                                 It is used when recreating zip archive with RAW when deleting items from a zip.
                                  ZIP64 data is automatically added to items that needs it, and existing ZIP64 data need to be removed.
    Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bzip2 lib is required)
    Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer
@@ -48,7 +48,7 @@
 /* compile with -Dlocal if your debugger can't find static symbols */
 
 #ifndef VERSIONMADEBY
-# define VERSIONMADEBY   (0x0) /* platform depedent */
+# define VERSIONMADEBY   (0x0) /* platform dependent */
 #endif
 
 #ifndef Z_BUFSIZE
@@ -139,20 +139,20 @@
     uInt pos_in_buffered_data;  /* last written byte in buffered_data */
 
     ZPOS64_T pos_local_header;     /* offset of the local header of the file
-                                     currenty writing */
+                                     currently writing */
     char* central_header;       /* central header data for the current file */
     uLong size_centralExtra;
     uLong size_centralheader;   /* size of the central header for cur file */
     uLong size_centralExtraFree; /* Extra bytes allocated to the centralheader but that are not used */
     uLong flag;                 /* flag of the file currently writing */
 
-    int  method;                /* compression method of file currenty wr.*/
+    int  method;                /* compression method of file currently wr.*/
     int  raw;                   /* 1 for directly writing raw data */
     Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
     uLong dosDate;
     uLong crc32;
     int  encrypt;
-    int  zip64;               /* Add ZIP64 extened information in the extra field */
+    int  zip64;               /* Add ZIP64 extended information in the extra field */
     ZPOS64_T pos_zip64extrainfo;
     ZPOS64_T totalCompressedData;
     ZPOS64_T totalUncompressedData;
@@ -166,10 +166,10 @@
 typedef struct
 {
     zlib_filefunc64_32_def z_filefunc;
-    voidpf filestream;        /* io structore of the zipfile */
+    voidpf filestream;        /* io structure of the zipfile */
     linkedlist_data central_dir;/* datablock with central dir in construction*/
     int  in_opened_file_inzip;  /* 1 if a file in the zip is currently writ.*/
-    curfile64_info ci;            /* info on the file curretly writing */
+    curfile64_info ci;            /* info on the file currently writing */
 
     ZPOS64_T begin_pos;            /* position of the beginning of the zipfile */
     ZPOS64_T add_position_when_writing_offset;
@@ -620,9 +620,9 @@
   uLong uL;
 
   uLong number_disk;          /* number of the current dist, used for
-                              spaning ZIP, unsupported, always 0*/
+                              spanning ZIP, unsupported, always 0*/
   uLong number_disk_with_CD;  /* number the the disk with central dir, used
-                              for spaning ZIP, unsupported, always 0*/
+                              for spanning ZIP, unsupported, always 0*/
   ZPOS64_T number_entry;
   ZPOS64_T number_entry_CD;      /* total number of entries in
                                 the central dir
diff --git a/contrib/minizip/zip.h b/contrib/minizip/zip.h
index 259efd2..5fc0841 100644
--- a/contrib/minizip/zip.h
+++ b/contrib/minizip/zip.h
@@ -131,7 +131,7 @@
 
 /* Note : there is no delete function into a zipfile.
    If you want delete file into a zipfile, you must open a zipfile, and create another
-   Of couse, you can use RAW reading and writing to copy the file you did not want delte
+   Of course, you can use RAW reading and writing to copy the file you did not want delete
 */
 
 extern zipFile ZEXPORT zipOpen2(const char *pathname,