mesa: Rename _mesa_..._array_obj functions to _mesa_..._vao.

mesa: Rename _mesa_..._array_obj functions to _mesa_..._vao.

_mesa_update_vao_client_arrays() is less of a mouthful than
_mesa_update_array_object_client_arrays(), and generally clearer.

Generated by:
$ find . -type f -print0 | xargs -0 sed -i \
  's/_mesa_\([^_]*\)_array_object/_mesa_\1_vao/g'
with manual whitespace and indentation fixes applied.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>