Move usage of the old LOCAL_USER_* macros to the new ast_module_user_*...

Move usage of the old LOCAL_USER_* macros to the new ast_module_user_* functions in a few documentation places.
(closes issue #11533)
Reported by: IgorG
Patches:
      oldmacroclean.v1.diff uploaded by IgorG (license 20)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@92811 65c4cc65-6c06-0410-ace0-fbb531ad65f3