Added the query for an extension entry point on windows. Sheen now runs with GLSL!
Added the query for an extension entry point on windows. Sheen now runs with GLSL!

git-svn-id: f6f47f0a6375c1440c859a5b92b3b3fbb75bb58e@3231 afdca40c-03d6-0310-8ede-e9f093b21075

libsh-archive/sh,libsh-archive/sh,libsh-archive/sh,libsh-archive/sh,libsh-archive/sh,libsh-archive/sh