Jars have a strange sorting order; the META-INF/ directory should
come first, then META-INF/MANIFEST.MF, then any other files in
META-INF/, and then any files outside META-INF. Add a -j argument
to zip2zip that sorts using jar ordering.
Test: zip2zip_test
Change-Id: I80e2bc7e284ef74f6561c26cb6541298834db1bc