Add CSIDL_PROFILES.  Improved logging for non-existent CSIDL values.

diff --git a/include/shlobj.h b/include/shlobj.h
index 1e49a6e..37b4a84 100644
--- a/include/shlobj.h
+++ b/include/shlobj.h
@@ -566,6 +566,7 @@
 #define CSIDL_COMMON_OEM_LINKS	0x003a
 #define CSIDL_CDBURN_AREA	0x003b
 #define CSIDL_COMPUTERSNEARME	0x003d
+#define CSIDL_PROFILES		0x003e
 #define CSIDL_FOLDER_MASK	0x00ff
 #define CSIDL_FLAG_PER_USER_INIT 0x0800
 #define CSIDL_FLAG_NO_ALIAS	0x1000