Better handling of custom templates and hooks.
Bug fixes.

diff --git a/include/commdlg.h b/include/commdlg.h
index 3fd1652..90991bd 100644
--- a/include/commdlg.h
+++ b/include/commdlg.h
@@ -36,6 +36,8 @@
 #define OFN_LONGNAMES                0x00200000
 #define OFN_ENABLEINCLUDENOTIFY      0x00400000
 #define OFN_ENABLESIZING             0x00800000
+#define OFN_DONTADDTORECENT          0x02000000
+#define OFN_FORCESHOWHIDDEN          0x10000000
 
 /* WINE internal flags */
 #define OFN_UNICODE		     0x40000000	/*to differ between 32W/A hook*/