Add vtest target to run valgrind.
Add vtest target to run valgrind.

wongsyrone/libbloom,EverythingMe/libbloom,jvirkki/libbloom,wongsyrone/libbloom,EverythingMe/libbloom,jvirkki/libbloom,rogers0/libbloom,rogers0/libbloom,rogers0/libbloom,jvirkki/libbloom,wongsyrone/libbloom