DofMap can report if it is capable of using blocked storage
support for --enable-blocked-storage
PETSc BAIJ support
trivial formatting
extend blocksize option to matrices init()ed without the help of the DofMap
towards add_block_matrix()
Added Widmer 2013 reference.
Updated Bhalla 2013 preprint.
Updated Bittl preprint.
Commiting libmesh_config.h.in changed triggered by 52f950a0.
Got copy of Satou paper, they do use Libmesh.
Boyce Griffith says these papers don't use libmesh :-(
Adding Hu et al tech report.
Fix for -Wshadow warning
Bugfix for dof_id_type!=unsigned int configs
Remove equivalence between "SHELL" and standard element types.

SHELL4 seems to be the default 2D quadrilateral element type for
Cubit, unfortunately SHELL elements have a different number of sides
than standard elements, and our Exodus reader is not currently set up
to handle them.

Closes Issue #100.
Merge pull request #91 from benkirk/blocked_matvec

Support for PETSc's BAIJ format