Merge branch 'msvc' into branch-1.11

Merge branch 'msvc' into branch-1.11

* msvc:
  news: add entry about recent 'ar-lib' changes
  scripts: recognize the "q", "s" and "S" actions/modifiers in ar-lib
  vala: fix 'valac' calls for projects with mixed Vala/C
  vala: expose automake bug#10894
  dryrun: $(am__dry_run) not confused by metachars in $(MAKEFLAGS)
  update-copyright: don't touch files synced from external packages
  fixup: distribute 'lib/update-copyright'
  maint: add a rule to use gnulib's update-copyright
  fixup: do not tickle makefile-deps.test with the make_dryrun code