Put clicompat-r2.patch back in

We've figured out how to resolve the problems this was causing in 12/trunk,
so this can go back in now.

(issue ASTERISK-22467)
Reported by: Corey Farrell
Patches:
    clicompat-r2.patch uploaded by coreyfarrell (license 5909)
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Merged revisions 401914 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 401935 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 401936 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@401937 65c4cc65-6c06-0410-ace0-fbb531ad65f3