Original commit message from CVS:
* codegen/argtypes.py:
* gst/Makefile.am:
* gst/common.h:
* gst/gst.defs:
* gst/gstbin.override:
* gst/gstelement.override:
* gst/pygstiterator.c: (pygst_iterator_dealloc),
(pygst_iterator_iter_next), (pygst_iterator_new):
* testsuite/test_iterator.py:
Add GstIterator wrapping and tests.