[mesa] (2 commits) ...gallium drivers must be set explicitely for s390(x) otherwise also r300, r600 and vmwgfx are built

[Dan Horák]

Summary of changes:

  37dacda... drop gl-manpages and glu from sources (*)
  505963e... gallium drivers must be set explicitely for s390(x) otherwi (*)

(*) This commit already existed in another branch; no separate mail sent