gmod_src: Gave menusystem access to toybox

Revision 594
Gave menusystem access to toyboxChanged Files:
[ul]
[li]trunk/src_garrysmod/garrysmod/IMenuSystem.h[/li][li]trunk/src_garrysmod/garrysmod/MenuSystem/MenuSystem.cpp[/li][li]trunk/src_garrysmod/garrysmod/MenuSystem/MenuSystem.h[/li][li]trunk/src_garrysmod/garrysmod/garrysmod.cpp[/li][/ul]
Committed By Garry Newman