Logger: Fix handling of absolute paths

This fixes path handling for log files so that an extra / is not
appended to the file path when the path is absolute (begins with /).
This would previously result in different but functionally equivalent
paths in the output of 'logger show channels'.
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Merged revisions 407455 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 407456 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 407458 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@407459 f38db490-d61c-443f-a65b-d21fe96a405b
CHANGES: Improved description of Name/Creator changes to bridge ARI, adds AMI

The changes log was written with language that was a little too internal
Asterisk specific, so it's been changed to be more in the frame of reference
of an ARI user. Also, previously the AMI event changes were omitted from the
change log as well as the ability to include a bridge name in the ARI post
bridges command.
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Merged revisions 407461 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@407462 f38db490-d61c-443f-a65b-d21fe96a405b