Error on suboptimal system server classpath order, unless explicitly allowed.

The order is non-optimal if some jar X precedes its dependency Y. In
that case dexpreopt will be unable to resolve any rerefences from X to
Y. Raise an error unless the product sets variable
PRODUCT_BROKEN_SUBOPTIMAL_ORDER_OF_SYSTEM_SERVER_JARS to true in the
makefile. This is to prevent regressions in existing products that
currently have correct order.

Test: lunch cf_x86_phone-userdebug && m nothing
Test: lunch aosp_car_arm && m nothing

Bug: 140451054

Change-Id: Iafe8fe0e992deb628e38f2321d4601a4804a3c79