Specify the -rpath linker flag when prefix != /usr.

This allows Asterisk to start without having to specify the
LD_LIBRARY_PATH. This can be disabled by passing --disable-rpath to
configure.

(closes issue ASTERISK-20407)
Reported by: David M. Lee
Review: https://reviewboard.asterisk.org/r/2132/
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Merged revisions 379475 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@379477 f38db490-d61c-443f-a65b-d21fe96a405b
Fix regression in Confbridge user count

When the restructuring work got committed to Confbridge in r375470 to
fix many open issues, it caused a regression in the reported count of
users when conference information was requested via CLI or manager.
This corrects the user count and user information displayed when
listing conference information from the CLI and manager.

(closes issue ASTERISK-20938)
Reported-by: Timo Teras
Patch-by: Timo Teras
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Merged revisions 379478 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@379479 f38db490-d61c-443f-a65b-d21fe96a405b