Disable dumping log file after integration tests.
Add integration test coverage for TestEvent

Added to CanLoadSimpleProject to avoid making integration
tests take even longer.

Updated to junit 0.10 just to be slightly less ancient.

Couple of robustness fixes to the earlier tests in
CanLoadSimpleProject also included in this patch.
Fix race in CanLoadSimpleProject

The previous part of the test could leave leftover
ExecutionSuccess/ExecutionFailure events so we only want
to look at the ones that match the id of our "test" execution.
Fix CanLoadSimpleProject test to process events in order

Can't use the default executor for handleEvents, without
getting broken semantics.
Merge pull request #174 from sbt/wip/havocp-add-testevent-test

Add integrationt test coverage for TestEvent