* tools/client-side/showchange.pl: Add trivial -? / -h / --help output.
* tools/client-side/showchange.pl: Add trivial -? / -h / --help output.

Patch by: Colin Watson <cjwatson@flatline.org.uk>
(Tweaked by me.)

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion