General:

* Fixed a variety of server browser issues with mods based on this SDK
* Fixed many warnings on various platforms
* Added source code for fgdlib and raytrace
* Updated many source files with the latest shared source from TF2.

OSX:
* Added support for Xcode 4.6
* Switched OSX builds to use Xcode instead of makefiles
* Moved libs from src/lib/osx32 to src/lib/public/osx32 or
src/lib/common/osx32 to match windows better.

Linux:
* Moved libs from src/lib/linux32 to src/lib/public/linux32 or
src/lib/common/linux32 to match windows better.
Fix bsp lump names being declared non-portably

gcc issues warnings when encountering multicharacter constants, so we'll
simply emulate them in a manner works portably. The code assumes we are
using a little-endian machine - the real solution would be using using
four
chars instead of an enum.
Fixed Source Mod back-compatability by reordering

methods in a couple interfaces.

* Added missing singleplayer OSX libs
* Updated vpc and libs.
Added missing libs for linux and OSX in their new location.
Deleted mp files