Implement native method return value and upcall argument type checking.

Also clean up the CheckJNI testing a bit. I still need to do some work so that
JniAbort catches more of the detail, but this is a step forward.

Change-Id: Ibf5e32867d56123cff902ebf602406b731f567d2
10 files changed
tree: 5ee2b94e5905ff69d3f138ebbecb7abe2a44149f
  1. .gitignore
  3. build/
  4. jdwpspy/
  5. src/
  6. test/
  7. tools/