Load system extractor plugins from /system|vendor/lib[64]/extractors.

Plugins will be placed under /system|vendor/lib[64]/extractors and the
device will include a stub MediaComponents apk for later update.

Test: boots and play mp4 files
Bug: 67908547
Change-Id: I5ab30093d9dd50324ba327baa8270a204e10f8a5
diff --git a/packages/MediaComponents/Android.mk b/packages/MediaComponents/Android.mk
index bbd2afa..bb3dc99 100644
--- a/packages/MediaComponents/Android.mk
+++ b/packages/MediaComponents/Android.mk
@@ -34,22 +34,19 @@
 
 LOCAL_JAVA_LIBRARIES += android-support-annotations
 
-# Embed native libraries in package, rather than installing to /system/lib*.
-# TODO: Find a right way to include libs in the apk. b/72066556
-LOCAL_MODULE_TAGS := samples
-
 # To embed native libraries in package, uncomment the lines below.
-LOCAL_JNI_SHARED_LIBRARIES := \
-    libaacextractor \
-    libamrextractor \
-    libflacextractor \
-    libmidiextractor \
-    libmkvextractor \
-    libmp3extractor \
-    libmp4extractor \
-    libmpeg2extractor \
-    liboggextractor \
-    libwavextractor \
+#LOCAL_MODULE_TAGS := samples
+#LOCAL_JNI_SHARED_LIBRARIES := \
+#    libaacextractor \
+#    libamrextractor \
+#    libflacextractor \
+#    libmidiextractor \
+#    libmkvextractor \
+#    libmp3extractor \
+#    libmp4extractor \
+#    libmpeg2extractor \
+#    liboggextractor \
+#    libwavextractor \
 
 # TODO: Remove dependency with other support libraries.
 LOCAL_STATIC_ANDROID_LIBRARIES += \