This test intentionally leaks memory so KWSys excludes it from MemCheck.
However, when CTestTest2 runs under our own MemCheck then valgrind may
recursively check tests run by ctest_test() calls in our test.cmake
script.  Teach these calls to exluce testProcess-10 too.  Also read
the KWSys CTestCustom.cmake file so ctest_memcheck() will ignore the
test too.