Merged revisions 228378 via svnmerge from

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

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  r228378 | mnicholson | 2009-11-06 10:26:59 -0600 (Fri, 06 Nov 2009) | 8 lines
  
  Properly handle '=' while decoding base64 messages and null terminate strings returned from BASE64_DECODE.
  
  (closes issue #15271)
  Reported by: chappell
  Patches:
        base64_fix.patch uploaded by chappell (license 8)
  Tested by: kobaz
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@228620 65c4cc65-6c06-0410-ace0-fbb531ad65f3