tcptls.c: Made TLS handle a certificate chain file.

Thanks to Guillaume Martres for doing the necessary research to validate
the change.

(closes issue ASTERISK-17727)
Reported by: LN
Patches:
      use_certificate_chain.patch (license #5864) patch uploaded by st
      documente_certificate_chain.patch (license #6576) patch uploaded by Guillaume Martres
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Merged revisions 407272 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 407273 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 407274 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@407275 f38db490-d61c-443f-a65b-d21fe96a405b
res_pjsip: Fix assertion for pjsip.conf authorization list options.

(closes issue ASTERISK-23168)
Reported by: George Joseph

Review: https://reviewboard.asterisk.org/r/3143/
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Merged revisions 407324 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@407325 f38db490-d61c-443f-a65b-d21fe96a405b