11127 libsip: NULL pointer errors
Reviewed by: Andrew Stormont <andyjstormont@gmail.com>
Approved by: Dan McDonald <danmcd@joyent.com>

PSARC 2007/447 SIP Contact API
6503334 SIP library should support "*" as a valid contact header value
6587481 add a SIP API to retrieve the the local contact information from sip_dialog struc

PSARC 2007/447 SIP Contact API
6503334 SIP library should support "*" as a valid contact header value
6587481 add a SIP API to retrieve the the local contact information from sip_dialog structure
6589677 add a SIP API to create a request inside a dialog, without a Contact header

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6480199 header files in libsip needs clean-up
6481951 SIP timer doesn't schedule timeouts accurately
6484530 Memory leak in deleting partial dialogs

PSARC 2006/402 SIP Library Integration
6461142 Integrate SIP in Solaris