Merged revisions 58320 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r58320 | russell | 2007-03-07 19:01:46 -0600 (Wed, 07 Mar 2007) | 6 lines

If we receive ZT_EVENT_REMOVED, destroy the specified channel. 
(issue #7256, tzafrir)

Also, update the configure script to make sure that we don't try to build 
chan_zap if the installed version of zaptel does not include ZT_EVENT_REMOVED.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@58321 65c4cc65-6c06-0410-ace0-fbb531ad65f3