gmod_src: Fixed reading files outside of folder

Revision 983
Fixed reading files outside of folderChanged Files:
[ul]
[li]trunk/src_garrysmod/garrysmod/Library/gl_file.cpp[/li][li]trunk/src_garrysmod/garrysmod/gmod_version.h[/li][/ul]
Committed By Garry Newman

Was fun while it lasted.