package_rpm: Workaround for 'all' arch multilib package naming

package_rpm: Workaround for 'all' arch multilib package naming

[YOCTO #3565]

All packages should not be multilib specific, however when the multilib
rules run, they automatically rename the 'all' target recipes.  As such
there is no way to know if an 'all' package should or should not contain
the multilib prefix.  We workaround this issue in the translate function
by checking to see if the runtime-reverse file exists or not.

The workaround should be removed once a proper solution to the architectural
issue is in place.

(From OE-Core rev: ea4b8c73a7f807ccd9aa22dfcf41285145a9dd2e)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>