An initial version of jacobi-unroll.  Need to ask Ian and Cathie
about the fact that it still doesn't pass the correctness test.
Adding jacobi-unroll example to colostate study.
Merge remote-tracking branch 'upstream/master'
Merge pull request #715 from mstrout/master

Michelle's first pull request. An unrolled version of the Jacobi 1D code used for study of diamond tiling.