Support building against prebuilt conscrypt and i18n modules

This change gives the prebuilt bootclasspath_fragment modules for both
conscrypt and i18n access to the dex implementation jars from the
prebuilt apex files. That in turn will allow those prebuilts to work
properly with the platform_bootclasspath when they are preferred.

Bug: 177892522
Test: m nothing
Change-Id: Ia4ebee2c86e6d9314252d64f2deed78f3a3b3376
2 files changed