Leverage the AX_VALGRIND_CHECK Autoconf Archive macro to add a new
'check-valgrind' target to the MaRC Makefiles. This allows each of
the MaRC unit tests to be executed under Valgrind by running `make
check-valgrind' to simplify memory related problem detection.
Leverage the AX_VALGRIND_CHECK Autoconf Archive macro to add a new 'check-valgrind' target to the MaRC Makefiles. This allows each of the MaRC unit tests to be executed under Valgrind by running `make check-valgrind' to simplify memory related problem detection.