Trac #18608
Boolean Uniforms are treated as either ints or floats both internally and when being loaded.
A GLBoolean is effectively a char which is incorrect.

Signed-off-by: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@872 736b8ea6-26fd-11df-bfd4-992fa37f6226