Support LOCAL_PAGE_ALIGN_JNI_SHARED_LIBRARIES for prebuilt APKs

If a prebuilt APK contains shared libraries and the flag
LOCAL_PAGE_ALIGN_JNI_SHARED_LIBRARIES := true is set, then
uncompress any shared libraries stored within the APK.
This allows processes to load the shared library directly from
the APK.

Bug: 20247329
Bug: 8076853
Bug: 1162500
Change-Id: Iac4db32457d9ce31eb7256410023819b44fda0a6