[development doc updates]

[Fred Drake]

The development version of the documentation has been updated:

	http://python.sourceforge.net/devel-docs/


For Peter Funk:  Removed space between function/method/class names and
their parameter lists for easier cut & paste.  This is a *tentative*
change; feedback is appreciated at python-docs at python.org.

Also added some new information on integrating with the cycle detector
and some additional C APIs introduced in Python 2.1 (PyObject_IsInstance(),
PyObject_IsSubclass()).