Some compilers do not support standard STL allocator interface. Also removed _Charalloc function only needed by VC++6.0, which we do not support. Submitted by Eagle.Lu. BUG=19 Review URL: http://codereview.appspot.com/1913048 git-svn-id: https://angleproject.googlecode.com/svn/trunk@380 736b8ea6-26fd-11df-bfd4-992fa37f6226