Be a little more verbose when loading cel_custom.conf.

Review: https://reviewboard.asterisk.org/r/2805/
........

Merged revisions 398167 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 398168 from http://svn.asterisk.org/svn/asterisk/branches/11
........

Merged revisions 398196 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@398197 f38db490-d61c-443f-a65b-d21fe96a405b