Make config framework able to reload module configs with multiple config files.

The config framework is supposed to be able to load configs that come from
multiple config files.  The principle example is chan_sip's sip.conf and
users.conf.  Unfortunately, it only does this correctly on initial load.
This patch causes the module's config to be reloaded entirely if any of
the config files change.

(closes issue ASTERISK-22009)
Reported by: Richard Mudgett

Review: https://reviewboard.asterisk.org/r/2859/


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@399352 f38db490-d61c-443f-a65b-d21fe96a405b
Add a WARNING in bridge_softmix when a timing module isn't loaded

If bridge_softmix fails to be created because no timing source is present in
Asterisk, this will currently fail gracefully but with (most likely) a generic
error message by whatever module tried to create the softmix bridge. This
patch adds a more explicit warning so you can actually diagnose and fix the
problem.

Review: https://reviewboard.asterisk.org/r/2857/
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Merged revisions 399353 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 399365 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@399368 f38db490-d61c-443f-a65b-d21fe96a405b
Update prep_tarball with new documentation files on the Asterisk wiki

This will now pull both a command reference for the version being prepared,
as well as an Admin Guide that applies to all versions of Asterisk.

(issue ASTERISK-22439)
Reported by: Olle Johansson
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Merged revisions 399351 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 399373 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 399376 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@399378 f38db490-d61c-443f-a65b-d21fe96a405b