New module res_config_curl (closes issue #11747)

 Reported by: Corydon76
 Patches: 
       res_config_curl.c uploaded by Corydon76 (license 14)
       20080116__bug11747.diff.txt uploaded by Corydon76 (license 14)
 Tested by: jmls


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@98981 65c4cc65-6c06-0410-ace0-fbb531ad65f3