Path fixes

[Torsten Anders]

Hi,

I fixed several issues in mozart-stdlib/os/Path.oz. Attached is a diff. 
In case nobody objects I will commit these changes.

In case you want to try out my changes without recompiling all of 
Mozart I also attached a tmp package with a makefile.oz and an 
extensive test file (Path.tgz). The test file allows also to compare 
the differences of the present Path and my changes.

BTW: where are tests like this stored in the Mozart repository. There 
isn't any unit testing, is there?

Thank you!

Best,
Torsten

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--
Torsten Anders
Sonic Arts Research Centre ? Queen's University Belfast
Frankstr. 49 ? D-50996 K?ln
Tel: +49-221-3980750
http://strasheela.sourceforge.net
http://www.torsten-anders.de