#1 subwcrev replacement for unix builds

[Dr. Schorsch]

subwvrev was only available in the windows edition of TortoiseSVN. There was a shell script integrated in the tools section as unix replacement. This shell script seems to have some compatibility issues.
Now a unix version is of subwcrev is available from http://svnwcrev.tigris.org/servlets/ProjectDocumentView?documentID=44067&showInfo=true
This unix version should be integrated in the project.