Remove those pesky environment variables. Closes #3817
Merge pull request #3819 from milljm/updateStable_env

Remove those pesky environment variables
Merge pull request #3820 from jwpeterson/fix_warnings

Fixing warnings in solid mechanics module.
Fixing warnings in examples.

Refs #1777.
Fix warnings in tensor_mechanics.

Refs #1777.
Give MooseEnumBase a virtual destructor.

Refs #1777.