Try a test compile using the GMime library. Some distros install gmime-config

in the base package instead of the -devel package.  Now we print a notice and
disable GMime support instead of bombing during the main compilation.

(closes issue #13583)
Reported by: arkadia


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@145692 65c4cc65-6c06-0410-ace0-fbb531ad65f3