Quick and dirty filtering of present LOCAL_OPTIONAL_USES_LIBRARIES.

Filter LOCAL_OPTIONAL_USES_LIBRARIES by PRODUCT_PACKAGES. This has the
drawback that some present libraries may be filtered out as well, as the
full list of product packages is unknown until all Android.mk files have
been read.

This CL unblocks <uses-library> fixes for individual apps, which will be
necessary to dexpreopt them in the nearest future when the &-classpath
hack is removed in ART. Apps that are not fixed by then will loose
dexpreopt completely. This fix, although not perfect, lowers the risk of
loosing dexpreopt for many apps. In the future it may be replaced with a
better solution.

Bug: 132357300
Test: lunch aosp_cf_x86_64_phone-userdebug && m && launch_cvd \
        adb wait-for-device && adb root && adb logcat \
        | grep -E 'ClassLoaderContext [a-z ]+ mismatch'
        # empty grep output, no errors
Change-Id: I188cf240259f7a448623450e6a949e0784a21f87