Revert r257715.  This breaks the case where devd isn't running.  The
real solution to this is still being discussed and probably won't look
quite like this.
Add an -s option that specifies a path to an alternate etcupdate.sh script
to test.  This allows a non-installed version of the script to be tested
more easily.
Sort option flags and fix the width of the options list.  This is a purely
mechanical change, no content changes.