Updated sip_subscribe_presence to support Logger and PJSIP tracing

Ignore-this: 4975d00cc42c5c6e228b3ffe0e456f12

darcs-hash:20090223013709-1e3d8-fcf29f8aa00860a2bd76b0b2b9477992269848fc
Updated sip_subscribe_rls to support Logger and PJSIP tracing

Ignore-this: 9c24ed64c34f6ee8a25097162e1de47

darcs-hash:20090223014227-1e3d8-dbbc2b035c6b694b7f2f4727b45a1e6df90628a8