cmake : rework scantool/CMakeLists.txt
cmake : don't glob headers
cmake: always build diag_test
tests: rework l7_850 tests
ctest l7_850_01 : exercise routineNotCompleteOrServiceInProgress
D2 : routineNotCompleteOrServiceInProgress handling
ctest : test J1979 SID 1 PID 1, including multiple responses
scantool_test : Show readiness monitor summary count