py/objmodule: Allow to construct module instances.
py/objmodule: Allow to construct module instances.

A typical use (CPython compatible): type(sys)("modname").

Change-Id: I8c06d476c84a161b453378a1c536d55c16ae692e
Signed-off-by: Paul Sokolovsky <9dc5061f178bb11813e14f1ed02ba27eaf21fa5d@users.sourceforge.net>

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython