Update the host core.jar build to include classes.dex.

Uses LOCAL_BUILD_HOST_DEX:=true to do the heavy lifting.

See Ying Wang's example, which this obsoletes:
  https://android-git.corp.google.com/g/67581

Change-Id: I7ebfd7033e130280e473b1a42624c5d375d7eaed
1 file changed