Merged revisions 89893 via svnmerge from

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

........
r89893 | russell | 2007-11-27 18:20:13 -0600 (Tue, 27 Nov 2007) | 4 lines

 - update documentation for some of the goto functions to note that they
   handle locking the channel as needed
 - update ast_explicit_goto() to lock the channel as needed

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89915 65c4cc65-6c06-0410-ace0-fbb531ad65f3