This commit contains probably 92% of the striping infrastructure

This commit contains probably 92% of the striping infrastructure
we need initially.  The most pervasive change is the introduction
of "lov_stripe_md" throughout the code.

In addtion several small little bugs were nailed in the locking --
more are outstanding.

The setup scripts are not yet capable of running this code.

Kernel patches were updated to include LOOKUP (to let runtests.sh
work).