Merged revisions 85158 via svnmerge from

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

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r85158 | tilghman | 2007-10-09 16:55:06 -0500 (Tue, 09 Oct 2007) | 5 lines

This commit fixes the following issues:
- Deadlock in ast_write (issue #10406)
- Deadlock in ast_read (issue #10406)
- Possible mutex initialization error in lock.h (issue #10571)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@85176 65c4cc65-6c06-0410-ace0-fbb531ad65f3