neon: release 0.29.3

[Joe Orton]

Download: http://www.webdav.org/neon/neon-0.29.3.tar.gz
Signature: http://www.webdav.org/neon/neon-0.29.3.tar.gz.asc
 MD5: ba1015b59c112d44d7797b62fe7bee51  neon-0.29.3.tar.gz
SHA1: f84152dd08fc7d3bffadea0bc45ea738d3a873c3  neon-0.29.3.tar.gz

Changes in release 0.29.3:
* Change ne_sock_close() to no longer wait for SSL closure alert:
 - fixes possible hang with IIS servers when closing SSL connection
 - this reverts the behaviour with OpenSSL to match 0.28.x, and
   changes the behaviour with GnuTLS to match that with OpenSSL
* Fix memory leak with GnuTLS
* API clarification in ne_sock_close():
 - SSL closure handling now documented
 - return value semantics fixed to describe the implementation