Add "iax2 set debug peer" command and remove deprecated iax2 debug

commands that conflicted with adding new features to the newer debug 
commaands.

(closes issue #13103)
Reported by: mvanbaak
Patches:
      2008071901__issue13103_iax2_set_debug_peer.diff uploaded by 
mvanbaak (license 7)
Tested by: bbryant, mvanbaak


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@132470 65c4cc65-6c06-0410-ace0-fbb531ad65f3