Bug#752357: Patch for bug #752357.

[Nils Ulltveit-Moe]

I have submitted a patch that solves the immediate problem of bug 
#752357 on Debian and Ubuntu. You can find this patch on Launchpad under:

https://launchpad.net/~nils-ulltveit-moe/+archive/ppa/+packages

Essentially, the jnr-posix module has been upgraded to jnr-posix-3.0.1 
to fix this bug.

This allows os modules running chmod without error. It also for example 
makes it possible to install Setuptools in Jython. There are still some 
issues with the errno handling (For eksample, running os.mkdir() on an 
existing directory still causes OSError: [Errno 20000] Unknown error: 
20000:). However, this does not prevent applications from running, as 
the chmod bug previously did.

This means that it is possible to run os.chmod() and also possible to 
install setuptools on Jython using jython ez_setup.py with this patched 
version of Jython installed.

Best regards,
Nils Ulltveit-Moe