Merged revisions 72705 via svnmerge from

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

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r72705 | russell | 2007-06-29 15:56:18 -0500 (Fri, 29 Jun 2007) | 1 line

give format_pcm a more concise destription
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@72706 65c4cc65-6c06-0410-ace0-fbb531ad65f3