check rlimit _after_ reading config file, so that if 'dumpcore' is specified...

check rlimit _after_ reading config file, so that if 'dumpcore' is specified there it will take effect


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@8114 65c4cc65-6c06-0410-ace0-fbb531ad65f3