fix warning from "normalized" cast

TRAC #11556

* Restore warning C4800.
* Compare GLboolean normalized against GL_TRUE per the spec.

Signed-off-by: Daniel Koch
Author:    Andrew Lewycky

git-svn-id: http://angleproject.googlecode.com/svn/trunk@73 736b8ea6-26fd-11df-bfd4-992fa37f6226
3 files changed