GLX_EXT_create_context_es_profile is sufficient for creating an ES2 context
GLX_EXT_create_context_es_profile is sufficient for creating an ES2 context. GLX_EXT_create_context_es2_profile is not required, as GLX_EXT_create_context_es_profile supercedes it.
The file glx_config.c needs to be fixed.
Issue #23 (closed) is the equivalent bug for WGL.