Message2392

When compiler is set to NONE, and a package is
specified for the generated files, jythonc tries to
copy the nonexistant classfiles and barfs. 

Patch prevents the writeResults function from being
called when compiler is set to NONE.  This leaves the
generated java source files in proper jpywork/
subdirectory and prevents copying of nonexistant
classfiles.  Apply patch to main.py

I submitted this to the dev mailinglist before I
figured out there was this special thingy for patches.
 Sorry if that confuses anybody.