main/pbx - documentation - enhance 'core show hints' and 'core show hint' help text

Adds descriptive help text to 'core show hints' and 'core show hint'. The text describes the various columns for the sake of clarity.

ASTERISK-23764
Review: https://reviewboard.asterisk.org/r/3610/


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@415998 f38db490-d61c-443f-a65b-d21fe96a405b
AST-2014-007: Fix of fix to allow AMI and SIP TCP to send messages.

ASTERISK-23673 #close
Reported by: Richard Mudgett

Review: https://reviewboard.asterisk.org/r/3617/


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@416066 f38db490-d61c-443f-a65b-d21fe96a405b
MoH: Don't restart stream on repeated start calls

Currently, music on hold will stop and then start again from the
beginning if ast_moh_start() is called multiple times. This can happen
if a call is put on hold repeatedly (the channel receives multiple
HOLD control frames) and can be triggered from ARI by starting MoH on a
channel multiple times. This is fairly jarring/annoying to users.

This change prevents MoH from being restarted if the requested music
class is the same as the one currently playing.

Review: https://reviewboard.asterisk.org/r/3615/


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@416150 f38db490-d61c-443f-a65b-d21fe96a405b