python should search for db.h in inc_dirs and not in a hardcoded path.
If db.h is found but HASHVERSION is not 2 we avoid a warning by not.
adding this module to missing variable.
[YOCTO #1937]
(From OE-Core rev: 8eb3e52d39147f8cb98ec95857be17db0444098e)
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>