Add a --no-compile option to the art script and use it for jdwp.

The tests started to sometimes timeout, and I suspect the new dex2oat
invocations are related.

Test: run-jdwp-tests.sh
bug: 111174995
bug: 111342996

Change-Id: Ic15e05c614cb8f9cf5378fbb5753a5a2ac75ac0f