Add PRODUCT_PACKAGES_OVERRIDES to build.
I grow tired of modifying makefiles in lower parts of the build system than I personally maintain,
just to remove products from the build.
So, this allows removing any PRODUCT_PACKAGES by name that would otherwise be built. Borrowed code from PRODUCT_COPY_FILES_OVERRIDES.

Change-Id: Iaa8251b6e8939c23f223702b338301d31fe8e9fe