Add executable permission to ccache and protoc.
Mac: Fix corrupted protoc binaries.

These binaries were corrupted due to accidental newline ending conversion.
Add executable bit to gendbg.sh.
Rename GameInfo.txt to gameinfo.txt
Check in gitattributes for binaries.

Followup to @TheSeg's comments on 5f08baa.
Added auto-complete to "give" ConCommand
Updated prefixes and re-added item_suit hack
Chat messages are now printed to console in color

* Removed RemoveColorMarkup function (no longer used)
* Chat messages are now printed to console in CBaseHudChatLine::Colorize