Updating MOOSE headers - closes #2735
Fixing un-initialized value (#2721)
Fix timestep tolerance issue #2737
Merge pull request #2738 from jasondhales/multiapp_2737

Fix timestep tolerance issue #2737
Merge pull request #2739 from aeslaughter/valgrind

Fixing un-initialized value
Merge pull request #2736 from permcody/header_update

Updating MOOSE headers
I had the indices switched around for the eigenvectors ref #2725
Fixing a few warnings in the modules.

Refs #1777.
Merge pull request #2741 from bwspenc/material_tensor_2725

Switch indices for eigenvectors in MaterialTensorCalculator
Merge pull request #2742 from jwpeterson/fixing_warnings

Fixing a few warnings in the modules.
Squash all XFEM commits that touch MOOSE
Temporary HACK: Skip copying of stateful data to avoid segfault
Switch to using enum to define quantity to extract with XFEMCutPlaneAux
Squash all XFEM commits that touch elk
Work in progress to make auxKernel to identify crack tip elements
More work on flagging crack tip elements
Fix problems with overlays_elem() that broke check for crack tip elements
Clear CrackTipElements in the right place
Mark cuts by state

Modify XFEM class to include a vector of elements marked for cutting
based on state, and cut those elements.  Add an ElementUserObject that
determines whether elements should be cut based on state adds elements
to be cut to the XFEM object's vector of elements to be cut.  Still need
to modify the UserObject to mark based on something meaningful, but
the framework is in place now.
More work on XFEMMarkerUserObject