* python/decorators.py: Add optional arguments to the method and
signal decorators to allow you to specify the signature of arguments
and return values. Preserve the doc strings of signal functions in the
decorated version, for pydoc and friends.
* python/dbus_bindings.pyx, python/proxies.py: Replace the
parse_signature_block function with an iterable dbus.Signature()
type. Fix a bug in MessageIter.append_strict where you could append
anything by claiming it was a string.
* python/service.py: Use the out_signature decoration on methods to
marshal return values, meaning you no longer require dbus.Array()
or dbus.Dictionary() to indicate the type when returning empty
arrays or dictionaries. Fix a bug where exceptions which are defined
in __main__ are not turned into error replies.
* test/python/test-client.py, test/python/test-service.py: Add test
for correct marshalling of return values according to out_signature.
Fix a bug in the async call test where the error_handler is missing a
self argument.
STRUCT_BEGIN not TYPE_STRUCT in indicate we are marshalling a struct
* python/service.py (Object::_message_cb): handle exceptions correctly
by sending them over the wire to the calling app. This makes sure
the client returns immediately instead of waiting the 15 seconds to
timeout.
* test/python/test-client.py (TestDBusBindings::testBenchmarkIntrospect):
Add a test to benchmark how long it takes to introspect a service and
call a method which returns a large element (pretty fast)
* test/python/test-service.py (TestObject::GetComplexArray): new test
method which pushes a lot of data
* test/python/test-{server|client}.py: add the python/.libs directory
to the lookup path so dbus_bindings and dbus_glib_bindings don't
get picked up from the system
