Changes to CH3 and ADI3
From Mpich2
TODO: port from http://www.mcs.anl.gov/research/projects/mpich2/olddeveloper/design/ch3changes.htm
Note the document listed above is very out of date. A lot has changed in CH3 and ADI3 since these were written. It's been said that no documentation is better than bad documentation, so read the above at your own risk.
