Allow time step to increase after shrinking.

This addresses issue #3764.
FiniteStrainPlasticBase can now apply strain increment in small substeps

Fixes #3774

It would be even better if FiniteStrainPlasticBase could
signal that it failed, even after applying all these small
substeps, and hence cut the timestep for the entire
mesh.  I'm not sure how to do that, and it wasn't the
point of this issue.
small style modifications refs #3765 #3764
Add test for regrowing DT with ConstantDT refs #3765 #3764
Add MultiMooseEnum to MOOSE
refs #3688
Merge pull request #3770 from permcody/VectorMooseEnum

Add MultiMooseEnum to MOOSE
Fixed bugs in derivatives.  Oh my goodness, how did these get coded?!

Fixes #3787

Some tests needed re-golding to fix minor discrepancies.
Merge pull request #3788 from WilkAndy/mc_deriv_3787

Fixed bug in derivative.  Fixes #3787
Fixing a typo (refs #3792)
Replacing tabs with spaces (refs #3792)
Resolved dependency issue with --recover
(closes #3674)
When running in threaded mode, cleanup unwanted checkpoint files (closes #3792)
This second commit Fixes #3786.

Debugging tools used by developers have been refactored to make
them, hopefully, a bit more useful.  This is probably an ongoing
task, but this iteration is certainly better than the last!
Merge pull request #3776 from WilkAndy/subdivide_3774

FiniteStrainPlasticBase can now apply strain increment in small substeps
Fixing uses of AutoPtr in MOOSE for upcoming libmesh refactoring.

This patch does not require a libmesh update to work, it only enforces
proper AutoPtr usage.

Refs #3798.
Add support for throwing exceptions in MooseError() and MooseWarnings()
refs #3615
Add new tests that test mooseError() while unit testing
closes #3615
Adding doco to close an existing ticket
closes #1456
Dry run for the TestHarness
closes #3150
It is ambiguous to construct a std::unique_ptr with an explicit (NULL) argument.

This is apparently because there is a 'nullptr' constructor for this
class.  Luckily, using the default constructor instead works just fine.

Refs #3799.