Allow DiffSolver::continue_after_backtrack_failure
Merge pull request #89 from grinsfem/continue_after_backtrack_failure

Allow DiffSolver::continue_after_backtrack_failure
Add Nemesis output option
Runtime selection of Mesh/SerialMesh/ParallelMesh
Merge pull request #90 from grinsfem/nemesis_vis

Add Nemesis output option
Merge pull request #91 from grinsfem/parmesh

Runtime selection of Mesh/SerialMesh/ParallelMesh
Increase tolerances to pass stampede -np 2 tests

These are some fairly innocuous increases over some
previously-very-tight tolerances, so I think the right thing to do is
just loosen the tolerances.

This doesn't quite get "make check" working for me, though - there's
a 1e-2 scale error in a third test that might be an actual regression.
Merge pull request #92 from grinsfem/tolerances

Increase tolerances to pass stampede -np 2 tests
Whitespace
Added solid mass consumption derivative.
Added solid mass consumption species mass fraction derivative.
Merge pull request #95 from pbauman/catalytic_wall_derivs

Catalytic wall derivatives
compatibility with --disable-default-comm-world
Merge pull request #98 from grinsfem/no_comm_world

compatibility with --disable-default-comm-world
Merge branch 'master' into derived_jacobians

We need the no_comm_world stuff to keep working with the latest
libMesh default configuration.
Merge branch 'master' into derived_jacobians

No, *really* merge the no_comm_world stuff this time.
How'd a swap file get committed?...