avahi: 0.6.31 -> 0.6.32

Bugfix release, backwards compatible:

  https://github.com/lathiat/avahi/releases/tag/v0.6.32

* Update src URL to github (the latest release is only available there).
* Change "$(mkdir_p)" to "$(MKDIR_P)" in the patch to keep it working
  (apply'able).

pkgs/development/libraries/avahi/no-mkdir-localstatedir.patch

@@ -6,7 +6,7 @@ Don't "mkdir $(localstatedir)" since we can't do it (/var).
  	done
  
  install-data-local:
--	test -z "$(localstatedir)/run" || $(mkdir_p) "$(DESTDIR)$(localstatedir)/run"
+-	test -z "$(localstatedir)/run" || $(MKDIR_P) "$(DESTDIR)$(localstatedir)/run"
  
  update-systemd:
  	curl http://cgit.freedesktop.org/systemd/plain/src/sd-daemon.c > sd-daemon.c