Extension of test code for jython

The patch would need to be checked against Jython's last release and/or
the current trunk.

Can someone ping the Jython tracker for help on this?

I just took a look at the original patch uploaded by drtimcouper.  IMHO
it would be cleaner and simpler to modify optparse.py so that it behaves
as consistently as possible under Jython and CPython.  For example,
optparse should catch the ValueError raised when a user supplies a bad
integer input and raise a new exception with a consistent error message.
 That sort of thing.

drtimcouper: if you're still out there and reading this, would you mind
submitting a new patch?

This looks like it was against Jython 2.2? Jython 2.5 passes 2.5's 
test_optparse with only fixing __builtins__ and disabling the weakref test

So uses of __builtins__ should should be importing __builtin__ and use 
that instead. sys.platform.startswith('java') should be 
test_support.is_jython instead. And on 2.6/3.2 you can now decorate 
test_refleak with @test_support.impl_check('Relies on sys.getrefcount', 
cpython=True) to skip it