Fix libedit build on solaris (add workaround to libedit/src/makelist to use /usr/xpg4/bin/tr which properly supports [:lower:] [:upper:])

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8389 d0543943-73ff-0310-b7d9-9358b9ac24b2