CHECK_EQUAL no longer crashes if string pointers are NULL.
Added test verifying that UNITTEST_TIME_CONSTRAINT works in TEST_FIXTURE tests.
Refactored SlowTestWithTimeExemptionPass into two tests, defined in the SlowTestHelper namespace. These tests are actually run by new test SlowTestsWithTimeExemptionsPass.
Merge pull request #25 from pjohnmeyer/fixCheckEqualExplodesIfNull

CHECK_EQUAL no longer crashes if string pointers are NULL. Closes #8.
Merge pull request #26 from pjohnmeyer/fixUnitTestTimeConstraintExemptForFixtures

Fix unit test time constraint exempt for fixtures; closes #9.
Merge remote-tracking branch 'upstream/master'