I reorderd some lines in the _rsync completion function to work around
a previously-reported problem with shorter options interfereing with
the completion of longer options.  [To remind folks what was wrong: the
options --include-from and --exclude-from were not completing files
after an '=' (though they would complete files if the '=' was removed)
because each had a shorter option (--include and --exclude) that also
ended with a '='.]

I just discovered that if I moved each longer option to come before
the associated shorter option, that file completion starts to work
properly.  At some point we'll probably want to debug this so that
the order is not significant.

..wayne..