AMR control update

New AMR tests. I am trying to implement a few lines of code in ProblemSetErrFlags routine in problem.f90 to refine only within some center region of my Bonner Ebert sphere. Here is what I found:

http://www.pas.rochester.edu/~erica/mesh_test1.html

Comments

Are we still doing dimensionally-split differencing to refine? Or are we doing actual gradients?