Given the msv problems I've run into, the woodstox validation code doesn't belong in 2.2.
My plan is: 1) commit current state, which is structurally relevant. 2) branch to sandbox. 3) delete the wstx-msv-validator module from the trunk. 4) extend the modularity fixes to the write side of the universe. 5) return to this topic for 2.2.x. Turning it on once the backend works can't be a giant problem.
