Cleaned up Common.h. Removed unnecessary includes and typedefs. Removed tabs from PoolAlloc.h and replaced UINT_PTR with uintptr_t. Review URL: http://codereview.appspot.com/1221041 git-svn-id: https://angleproject.googlecode.com/svn/trunk@289 736b8ea6-26fd-11df-bfd4-992fa37f6226