remove include of glob.h. not needed and causes win32 build to fail
plugin.c:
include compat.h and cast the return of GetProcAddress
gl_funcs.c:
fix parse error and type mismatch
qfgl_ext.c:
half re-write QFGL_ExtensionAddress to use QFGL_ProcAddress
vid_wgl.c:
fix for the new gl linking
(and thus have a new simpler PL_ObjectForKey() function to get a value for
a key). Also, you can now call PL_FreeItem() on a plitem_t to free a
property list item and all of its descendants (if it has any).
Binary plist values are still not supported.
