i965/state: Don't use brw->state.dirty.mesa

i965/state: Don't use brw->state.dirty.mesa

Now, we only use brw->NewGLState.

I used this bash & sed command in the i965 directory:
  for file in *.[ch] *.[ch]pp; do
    sed -i -e 's/brw->state\.dirty\.mesa/brw->NewGLState/g' $file
  done

Followed by manual changes to brw_state_upload.c.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>