[patch] svnversion - current working directory

I got sick of typing svnversion without a path and getting the usage
info.

This patch enables svnversion to act like the rest of the CLI programs.
When it is called without an argument it displays the revision of the
current directory, aka "." I believe this is a valid path for most
platforms (at least Win/*nix).

I'm not sure why this hasn't been done previously. If there was a good
debate and reason why it hasn't been changed to be like most of the CLI
programs I sure couldn't find it with google.

I'm not subscribed to Dev@ so please include me in any replies on that
list.

My first attempt at modifying SVN. ;)

Cheers,

-- 
Christopher Ness
Wireless Group,
McMaster University
finger - 00:03:55 up 22:12, 1 user, load average: 0.77, 0.27, 0.09

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