Allow gump to better override where to find test classes
Allow gump to better override where to find test classes

git-svn-id: https://svn.apache.org/repos/asf/jakarta/jmeter/branches/rel-2-1@351700 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: ec3c1ef869304a9bfc0bffbb09fafd332d7d7316
benbenw/jmeter,ham1/jmeter,etnetera/jmeter,ham1/jmeter,etnetera/jmeter,apache/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,apache/jmeter,ham1/jmeter,etnetera/jmeter,benbenw/jmeter,apache/jmeter,ham1/jmeter,apache/jmeter,benbenw/jmeter,etnetera/jmeter,etnetera/jmeter