Add support for eglBindTexImage and eglReleaseTexImage With this patch we can bind pbuffers as textures. Once we add support for using a sharing handle to create a pbuffer we can use this to allow us to use it as a texture as well. BUG=129 TEST=modified Simple_Texture2D works Review URL: http://codereview.appspot.com/4291066/ git-svn-id: https://angleproject.googlecode.com/svn/trunk@604 736b8ea6-26fd-11df-bfd4-992fa37f6226