idaholab/moose — pull request #4364 by dschwen (2014-12-08 22:32:04+00:00)
Title: Use OrderParameterFunctions

Use ```SwitchingFunctionMaterial``` and ```BarrierFunctionMaterial```. Also rename the order parameter from ```phi``` to ```eta``` (I'm making this the standard, as phi is already taken by MOOSE). Closes #4363.