* data/CMakeLists.txt
* don't install anything
* add 'cpp' to c++ test names and labels
* test/CMakeLists.txt: add label for run_ctest.cmake script
* add test/p21 for part 21 tests
* all that's in here now is part 21 schema name tests
* fix test/unitary_schemas/aggregate_array.exp - ctest works, no sense having this fail
* update run_ctest.cmake