After Spanky's change, also the mode would get prefixed with ${ED},

After Spanky's change, also the mode would get prefixed with ${ED},
which chmod or chown obviously doesn't grok.  Since the manpages suggest
the mode should come first, we just take the first argument separate,
and leave it alone.
- if it isn't set, chmod/chown will bail out
- if it has spaces, we properly pass it through, up to chmod/chown to
  decide what to do
- if it is a filename, chmod/chown will bail out for sure

svn path=/main/branches/prefix/; revision=6245