implement flushEvents() flushDigits() setAutoHangup() and setHangupHook().  reworked dtmfhandler and some aspects relating to threadstate.  folded in memory pool thing from mishehu.  added more asserts to switch_core_file (coordinated w/ anthony on this)

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Mon May 14 12:43:07 EDT 2007  martti.mela@nokia.com
  * su_base_port.c: fixed a double free in su_base_port_start_shared().

Fri May 25 13:56:23 EDT 2007  Pekka.Pessi@nokia.com
  * soa: added SOATAG_ORDERED_USER(), SOATAG_REUSE_REJECTED().
  
  Allow replacing existing m=lines.

Sun May 27 14:52:13 EDT 2007  Pekka.Pessi@nokia.com
  * msg_parser.c: fixed bug #1726034

Mon May 28 04:57:08 EDT 2007  Pekka.Pessi@nokia.com
  * test_nth.c: using non-blocking connect in test program, too.

Mon May 28 04:58:05 EDT 2007  Pekka.Pessi@nokia.com
  * su.c: making all sockets non-blocking by default.

Mon May 28 04:59:28 EDT 2007  Pekka.Pessi@nokia.com
  * m4/sac-su.m4: moved contents into sac-s2.m4

Mon May 28 05:32:26 EDT 2007  Pekka.Pessi@nokia.com
  * RELEASE: updated.

Wed May 30 10:37:53 EDT 2007  Pekka.Pessi@nokia.com
  * m4/sac-su2.m4: added configure option --disable-tag-cast.
  
  Added SU_INLINE_TAG_CAST into sofia-sip/su_configure.h{,.in}.
  Using SU_INLINE_TAG_CAST in
    sofia-sip/sip_tag.h{,.in}
    sofia-sip/http_tag.h{,.in}
    sofia-sip/su_tag.h
    sofia-sip/su_tag_io.h
    sofia-sip/auth_module.h
    sofia-sip/nth_tag.h
    sofia-sip/nua_tag.h
  
Fri Jun  1 15:11:52 EDT 2007  Pekka.Pessi@nokia.com
  * tport.c: fixed tport_set_params() with secondary transports

Fri Jun  1 15:13:23 EDT 2007  Pekka.Pessi@nokia.com
  * tport_type_tcp.c: checking for end-of-stream even if su_getmsgsize() promised more data

Fri Jun  1 15:15:34 EDT 2007  Pekka.Pessi@nokia.com
  * tport: added tport_is_clear_to_send(), allow use of tport_pending() without msg
  
  The error callback from tport can now be registered even if there is no
  request pending on transport (e.g., when keeping a transport connection open
  for inbound messages).

Fri Jun  1 15:16:43 EDT 2007  Pekka.Pessi@nokia.com
  * nta: not retrying after an transport error if application provided the transport

Fri Jun  1 15:17:23 EDT 2007  Pekka.Pessi@nokia.com
  * sip: do not accept empty URIs (<>) in From, To, and other headers expecting name-addr format

Fri Jun  1 15:17:43 EDT 2007  Pekka.Pessi@nokia.com
  * torture_url.c: added test for parsing empty URLs.

Fri Jun  1 15:19:27 EDT 2007  Pekka.Pessi@nokia.com
  * nua/test_proxy.[hc]: use registered connections for outbound with TCP.
  
  Added test_proxy_close_tports() used testing recovering from TCP failures.

Fri Jun  1 15:20:33 EDT 2007  Pekka.Pessi@nokia.com
  * test_nua.c: added --print-tags and --tags-a, --tags=b and --tags=c options
  
  Added more functions for handling events

Fri Jun  1 15:22:08 EDT 2007  Pekka.Pessi@nokia.com
  * test_nua: fixed some tests depending on delivery of responses in correct order
  
  Reordering might happen if some messages are sent over TCP, other over UDP.

Fri Jun  1 15:27:55 EDT 2007  Pekka.Pessi@nokia.com
  * nua_register.c: re-registering in case the TCP connection towards proxy is closed
  
  In test_nua, Mr. B is now using TCP with the test proxy.

Fri Jun  1 15:35:39 EDT 2007  Pekka.Pessi@nokia.com
  * nua/test_refer.c: fixed SIP payload checks

Fri Jun  1 15:36:08 EDT 2007  Pekka.Pessi@nokia.com
  * nta_internal.h: added orq_user_tport field

Tue Jun  5 06:16:43 EDT 2007  Pekka.Pessi@nokia.com
  * hide_email.sh: now fixing links, too.

Fri Jun 15 05:34:29 EDT 2007  Pekka.Pessi@nokia.com
  * nua: fixed documentation entries for API functions left out from doxygen
  
  Thanks for Jerry Ricahrds for pointing this out.

Wed May 23 10:26:26 EDT 2007  Mikhail Zabaluev <mikhail.zabaluev@nokia.com>
  * Correct documentation for parameter type of NUTAG_WITH_SAVED

Mon Jun 18 12:34:58 EDT 2007  Mikhail Zabaluev <mikhail.zabaluev@nokia.com>
  * Make nua_saved_event_request() and hence NUTAG_WITH_SAVED resilient to a NULL event content



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add userdata param to switch_log_printf so we can pass uuid or other session or other identification information to the logger.

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only include switch_stun.h where needed.  We use some c99isms in this header that do not get along well with some c++ compilers.

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* implement originate() and bridge() methods in CoreSession.  
* api changes for originate() : no longer passes 11 arguments


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