Re-factored checkpoint directory detection with --recover
(refs #3440)
Changed tolerances in pp_fu_22 test and re-golded.  Fixes #3368
libMesh update.  Refs #000.
Disable C++11 support by default in the update_and_rebuild.sh script.
Merge pull request #3469 from WilkAndy/pp_fu_22_3368

Changed tolerances in pp_fu_22 test and re-golded
Merge pull request #3465 from aeslaughter/refactor-3440

Re-factored checkpoint directory detection with --recover