I'm not sure if this is, strictly speaking, a bug, but, in COpenGLExtensionHandler.h/.cpp, pGlCompressedTexImage2D is defined only when PFNGLCOMPRESSEDTEXIMAGE2DPROC is defined. I *think* it should correctly be defined when GL_ARB_texture_compression is defined (at least, on the Win32 systems I have access to, that's where the garbled OpenGL name is defined). I checked, and it still appears this way in Rev 993.
(I have a couple other changes/enhancement reqs; those will be in separate posts)