Merged revisions 284478 via svnmerge from

Merged revisions 284478 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r284478 | tilghman | 2010-09-01 13:49:11 -0500 (Wed, 01 Sep 2010) | 11 lines

  Ensure that all areas that previously used select(2) now use poll(2), with implementations that need poll(2) implemented with select(2) safe against 1024-bit overflows.

  This is a followup to the fix for the pthread timer in 1.6.2 and beyond, fixing
  a potential crash bug in all supported releases.

  (closes issue #17678)
   Reported by: russell
  Branch: https://origsvn.digium.com/svn/asterisk/team/tilghman/ast_select

  Review: https://reviewboard.asterisk.org/r/824/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@284593 65c4cc65-6c06-0410-ace0-fbb531ad65f3