TestSynchronizer: Add a benchmarking test case that reproduces the slow performance we observed today in ProjectDemo. (This should be in the BenchmarkCoreObject target but it's a bit more work to move it.)

git-svn-id: http://svn.gna.org/svn/etoile/trunk/Etoile/Frameworks/CoreObject@10104 7b3f36aa-e6db-49c1-8b4c-66eac1997e64