Updated with suggestions from Magnus and other fixes and adjustments I found along the way
DbUtil.hpp, DbUtil.cpp:
fixes and adjustments I found along the way
Rename: storage/ndb/test/src/dbutil.cpp -> storage/ndb/test/src/DbUtil.cpp
DbUtil.hpp, DbUtil.cpp:
Many changes based off a review from Magnus
DbUtil.hpp:
Rename: storage/ndb/test/include/dbutil.hpp -> storage/ndb/test/include/DbUtil.hpp