googletest: add TYPED_TEST macros

[fwinkl]

Add TYPED_TEST and TYPED_TEST_P macro definitions (see http://google.github.io/googletest/reference/testing.html).

[danmar]

Thanks! What problem did you see because these macros was missing? Could you add a minimal test code to test/cfg/googletest.cpp to ensure there will not be regressions later.

[fwinkl]

I added a test-case (only happens within a namespace). Btw, the googletest.cpp doesn't really run cleanly anymore and shows many unmatchedSuppression even before my changes.