[PATCH] tweaked svnrdump to handle junk values with "--version"

Hi,

In my previous patch, I just tweaked svnrdump to display the "help"
documentation properly.

This patch would solve the problems that I mentioned in my earlier
patch, such as

1. displaying a better header for "svnrdump --vresion"

2. "svnrdump --version" should *not* accept junk values, like "svnrdump
--version --junk".

I have the patch and the log message attached with this mail.
Please review and comment.

Thanks and regards
Prabhu