Bug 1043132 - 5/N: rename private member functions.
Bug 1043132 - 6/N: remove unnecessary function names.
Bug 1043132 - 7.a/N: stitch schema upgrade functions up.
Bug 1043132 - 7.b/N: fix alignment
Bug 1043132 - 8.a/N: remove redundant unique flag at creating object store index.
Bug 1043132 - 8.b/N: unify variable naming
Bug 1043830 - 8.c/N: use object literal instead.
Bug 1043830 - 8.d/N: avoid creating Date object.
Bug 1043132 - 1/N: upgrade to match current resource stats db layout.