[PyQt] sip: extend exception support

[Phil Thompson]

On Mon, 27 Aug 2012 12:10:23 -0700, Matt Newell <newellm at blur.com> wrote:
>> 
>> The difference is the access to the (not necessarily present) objects.
>> How
>> are you getting these?
>> 
>> Phil
> 
> Here's the patch against a quite old hg checkout.

After several more iterations (ok, rewrites) the implementation in the
current snapshot should be Ok - and work with %Imported modules.

Phil