add virtual function for filling postions of sub-apps programmatically refs #3556
add postprocessordirichletbc to help out with postprocessor based transfers that are used as bcs refs #3556
can restrict autopositionsmultiapp to boundaries refs #3556
finish up test for autopositionmultiapp closes #3556
dont compare all apps outputs... because they may be reordered arbitrarily
Merge pull request #3557 from friedmud/auto_multi

AutoPositionMultiApp
delete new test
dummy refs #0000
Merge commit '985f9b758fefb89a22ac7f2ed8b9e5b84b0ee0e3'