Add init script for ArchLinux

(closes issue #13667)
Reported by: sherif
Patches:
      archlinux_rc_makefile.patch uploaded by sherif (license 591)
      archlinux_rc_makefile-2.patch uploaded by mvanbaak (license 7)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@157460 65c4cc65-6c06-0410-ace0-fbb531ad65f3