docs: sourcetree.html misc updates

A mixed bag of updates/fixes - mostly aiming at removing no longer
applicable directories.

Add a few more state-trackers, drivers, etc. alongside "XXX more" where
applicable. Attribute for the GLSL/NIR movement and nukage of
src/egl/docs.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
1 file changed