Merge remote-tracking branch 'origin/master'

* origin/master:
  glr.c: untabify.
  glr.cc: untabify.
  glr.cc: formatting changes.
  glr.cc: remove unused signature.
  glr.cc: properly declare locations are const where appropriate.
  doc: fix @xref.

Conflicts:
	data/glr.cc

diff --cc data/glr.cc
Simple merge

diff --cc doc/bison.texinfo
Simple merge