Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

FPIIM-449

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/tools/android-sync.sh b/tools/android-sync.sh
index 4acb1cc..6d9500f 100755
--- a/tools/android-sync.sh
+++ b/tools/android-sync.sh
@@ -88,6 +88,8 @@
 echo -n "sync to $ANDROID_V8/$OUTDIR/$ARCH_MODE"
 sync_file "$OUTDIR/$ARCH_MODE/cctest"
 sync_file "$OUTDIR/$ARCH_MODE/d8"
+sync_file "$OUTDIR/$ARCH_MODE/natives_blob.bin"
+sync_file "$OUTDIR/$ARCH_MODE/snapshot_blob.bin"
 sync_file "$OUTDIR/$ARCH_MODE/unittests"
 echo ""
 echo -n "sync to $ANDROID_V8/tools"