Merge changes from team/mvanbaak/cli-command-audit

Merge changes from team/mvanbaak/cli-command-audit
(closes issue #8925)

About a year ago, as Leif Madsen and Jim van Meggelen were going over the CLI
commands in Asterisk 1.4 for the next version of their book, they documented
a lot of inconsistencies.  This set of changes addresses all of these issues
and has been reviewed by Leif.

While this does introduce even more changes to the CLI command structure, it
makes everything consistent, which is the most important thing.

Thanks to all that helped with this one!

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@103171 65c4cc65-6c06-0410-ace0-fbb531ad65f3