Remove the 'pservice_id' attribute of the ActivityHandle too, since it was
completely pointless and should have been the same as the activity id anyway.
Share/join is handled in the Activity.__init__() method and the shell doesn't
really need to know about it at all.
These are just the doc strings I created as I was spelunking
through to see how Sugar manages launching applications. The
resulting auto-documentation is neither polished or finished,
but it should help people reading the code somewhat.
There are a few minor code cleanups:
* activityhandle (replacing C idiom for initialisation with
a Python one)
* bundle registry (using a parameterised directory name so
that it shows up in the documentation)
* validate_activity_id function, use isinstance( item, (str,unicode))
for the query, rather than two separate checks with isinstance
