Enable tracing for M2E

[1] http://help.eclipse.org/kepler/index.jsp?topic=%2Forg.eclipse.pde.doc.user%2Fguide%2Ftools%2Flaunchers%2Ftracing.htm
[2] http://wiki.eclipse.org/Tycho/FAQ#How_to_switch_on_eclipse_tracing_during_test_execution.3F
Build projects before running tests
Explicitly build each project

Setting autoBuild to true causes test to fail with:

    Timeout while waiting for completion of job: Building workspace(4)
Don't catch errors when waiting for ADT to load
Explicitly build each project
Drop unused private method getWorkspaceState()
Explicitly build each project
Explicitly build each project (with helper method)
Enable project refresh job
Don't build POM
Drop useless setUp() method
Suppress restiction warnings at a class level