py/objint: make_new: Support separate __new__ vs __init__ phases.
py/objint: make_new: Support separate __new__ vs __init__ phases.

Immutable type, __init__ is null.

Change-Id: I1a4a689228764d82d81030693bfd40608c28fb8c
Signed-off-by: Paul Sokolovsky <9dc5061f178bb11813e14f1ed02ba27eaf21fa5d@users.sourceforge.net>

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