use 'with GIL' instead of 'withGIL' to avoid introducing a non-Python keyword and to support later extension for other contexts

This is so mutating inplace operations can be detected safely.

avoid argument parsing (via meth_o, meth_noargs) for non-python-object arguments, upgrade version number to 0.9.6.4

compiles and runs SAGE fine

previous patch was just for classes

Emulates behavior of

from <module> import *

For some reason, it actually makes it slower in some of the most common cases (now commented out). Why? It does help in others.