Honor configured parkinglot when parking and retrieving parked calls

Thank oej for pointing out the fact that sip_new did not copy parkinglot from the peer
into the newly created channel.

(closes issue #15538)
Reported by: gracedman
Patches:
      2009090100_sipnewparkinglot-161.diff.txt uploaded by mvanbaak (license 7)
	  With mod by me to also fix callparking as well (this uploaded patch only fixed retrieving a parked call)
Tested by: gracedman, mvanbaak


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@215462 65c4cc65-6c06-0410-ace0-fbb531ad65f3