raja binning fixes

[cyrush]

fix raja binning implementation and switch to use it
add more tests

[cyrush]

RAJA Binning is not creating the proper input samples, it seems like the centroids are way off.
Above is a count case, elements in each output column should have the same value. The outer columns should match and the inner column should have higher values.

Input is a 6x6x6 cube. Purple shows the bin boundaries. Output bins are a 3x6x1 mesh.

[cyrush]

[cyrush]

sample points are bogus

[cyrush]

trying different ordering, still bogus

[cyrush]

there are still issues with the new raja implementation, but this is good forward progress. Old binning implementation is wired up with new tests.