Previous, two things were wrong:
1) lib_basename was set from STAGING_LIBDIR only if prefix parameter was empty or missing
2) if prefix was not empty, lib_basename reverted to sys.lib, even if STAGING_LIBDIR
should've overriden it
(From OE-Core rev: 28d29004aa7d17794216d7df55afc308b1f0e806)
Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>