Added +willRunTestSuite and +didRunTestSuite notifications sent to the principal class (e.g. for cleaning test suite files)

git-svn-id: http://svn.gna.org/svn/etoile/trunk/Etoile/Frameworks/UnitKit@10100 7b3f36aa-e6db-49c1-8b4c-66eac1997e64