We need to revisit the GL/indirect.c changes. I think indirect.c should
be using the same feature detection and GLX visual config code. The
indirect changes will require testing...
(cherry picked from commit 49b7a7c6f2)
Use ErrorF for an error message after an xcalloc failure, and return instead of falling through to GlxSetVisualConfigs, or abort()ing at the test branch.
(cherry picked from commit 1056700971)
