features_config: Ignore parkinglots in features.conf instead of failing to load

Parkinglots are defined in res_features.conf now, but this patch fixes
features_config so that features don't fail to load when parkinglots
are present in features.conf

Review: https://reviewboard.asterisk.org/r/2801/
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Merged revisions 398068 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@398099 f38db490-d61c-443f-a65b-d21fe96a405b
Update UPGRADE.txt file for Asterisk 12

This simply pulls in the changes that were breaking from the CHANGES file
and updates a few other areas accordingly. It also removes the 10 => 11
notes, which are traditionally removed from each major version and stored
in the appropriate UPGRADE-X.txt file.
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Merged revisions 398100 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@398101 f38db490-d61c-443f-a65b-d21fe96a405b