The upgrade from 2.7.3 to 2.7.9 in oe-core cb02ecb introduced some
copy-paste errors which inadvertandly disabled the generation of
optimised bytecode (.pyo files).
Restore the intended behaviour and bring back .pyo files.
(From OE-Core rev: f49077af44969212530a7f1b5cb9370fefb85434)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>