Merged revisions 18087 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r18087 | kpfleming | 2006-04-06 17:04:58 -0500 (Thu, 06 Apr 2006) | 3 lines

don't try to support 'i' or 'r' options if chan_zap is not loaded, and warn the user when they attempt to use them (issue #6675)
update application help text to more clearly define when Zaptel and chan_zap are required

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@18090 65c4cc65-6c06-0410-ace0-fbb531ad65f3