Mutiple updates from SciTech for wxWindows including the following:

1. Updates to HTML applet classes in client side include syntax
2. Updates to wxUniversal for OS/2
3. Updates for better palette management on Windows
4. Misc other fixes and changes to fix build system for Watcom 11.0


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12045 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/dir.cpp

@@ -35,6 +35,7 @@
 #include <sys/types.h>
 
 #define INCL_DOSFILEMGR
+#define INCL_DOSERRORS
 #include <os2.h>
 
 #ifdef __EMX__