am afe25515: Update DexFile_isDexOptNeeded to handle system.img oat files with classes.dex

* commit 'afe25515c358617321d69ab4f25003e3d905d613':
  Update DexFile_isDexOptNeeded to handle system.img oat files with classes.dex
tree: 181c2711f5552f011bd9072e2584cc466e03e45a
  1. build/
  2. jdwpspy/
  3. src/
  4. test/
  5. tools/
  6. .gitignore
  7. Android.mk