Ifpack hypre set function addition
Created by: jthano
This PR is to address issue #4976 (closed) and adds support of a set function in hypre taking an int ** argument.
The code has been tested by compiling the updated code and using the new interfaces to set values in a hypre solver object with a pointer to the HYPRE_BoomerAMGSetGridRelaxPoints function.
NOTE: I see that the commit history is cluttered. I think this is because my branch was created based on the Trilinos master branch. I think I need to make my changes based on the develop branch that I have submitted the PR against. I'll work on doing this
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