Added rexec support.

Added new machinery to avoid calling instance constructors if
no __getinitargs__.

Later we should allow multiple values for the same name.

for finding subobjects.

Also added fallback tpId fallback code to tpValuesIds.

out COLSPAN="1".

www.foo.com:80 if the server uses the default port of 80.

initialized correctly.

used, must have a value.  This is done by specifying None as a default
value.