Merged revisions 375112 via svnmerge from

Merged revisions 375112 via svnmerge from
file:///srv/subversion/repos/asterisk/branches/10

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  r375112 | wdoekes | 2012-10-16 16:43:29 -0500 (Tue, 16 Oct 2012) | 10 lines

  Fixes to the fd-oriented SIP TCP reads.

  Don't crash on large user input. Allow SIP headers without space.
  Optimize code a bit.

  Review: https://reviewboard.asterisk.org/r/2162
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  Merged revisions 375111 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10-digiumphones@375136 65c4cc65-6c06-0410-ace0-fbb531ad65f3