Quickbook: New branch for development.

From now on this will be my development branch.
Quickbook: Convert some of the math docs to 1.6.

Mainly did this to see how well compatibility-mode works.
Quickbook: Merge from trunk to quickbook-dev
Quickbook: Merge from trunk to quickbook-dev.
Quickbook: Merge from trunk to quickbook-dev.
Quickbook: Merge from trunk to quickbook-dev.
Quickbook: Merge to quickbook-dev
Quickbook: Merge from trunk.

Includes blocks in lists fixes, and some documentation changes.
Quickbook: Merge from trunk.