Docs: "Tombstone" for old NDK page, directing visitors to new NDK site.
Docs: "Tombstone" for old NDK page, directing visitors to new NDK site.

Change-Id: I520bfb5157b2ffed5baa182df7c6305bf8835360

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base