- suppress the output for unit_evaluate
- improve debug printout codec_conversion_test_testcard_uyvy_to_i420
- improve C variant of ASSERT_EQUAL_MESSAGE macro (prints num values
also in hex)
- remove VLA from codec_conversions_test.cpp (not valid in C++)
return int -1 if test failed; 0 if succeeded; 1 if not applicable (but
not failed)
As the old and new tests are mostly compatible now, do not take
different approach handling both groups.
