The manifest parsing code was only adding .py and .pyc paths to FILES,
generalise the latter to .py? so it catches .pyo files too.
(From OE-Core rev: 1e0ef76dcccfa10cdf473670acd2c52332bb3412)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>