SF bug [#472347] pydoc and properties.

SF bug [#472347] pydoc and properties.
The GUI-mode code to display properties blew up if the property functions
(get, set, etc) weren't simply methods (or functions).

"The problem" here is really that the generic document() method dispatches
to one of .doc{routine, class, module, other}(), but all of those require
a different(!) number of arguments.  Thus document isn't general-purpose
at all:  you have to know exactly what kind of thing is it you're going
to document first, in order to pass the correct number of arguments to
.document for it to pass on.  As an expedient hack, just tacked "*ignored"
on to the end of the formal argument lists for the .docXXX routines so
that .document's caller doesn't have to know in advance which path
.document is going to take.