chan_dahdi: Add some missing build cleanup.
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Merged revisions 397643 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@397644 f38db490-d61c-443f-a65b-d21fe96a405b
bridging: Fix a livelock with local channel optimization.

Use a better means of waking up the bridge channel thread.
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Merged revisions 397650 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@397651 f38db490-d61c-443f-a65b-d21fe96a405b
Fixed bucket.c for systems where tv_usec is not an unsigned long.
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Merged revisions 397673 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@397674 f38db490-d61c-443f-a65b-d21fe96a405b