Changes

Summary

1. Uncommenting diffusion.F90 k=1 lines again to fix Oracle uninit var test.  I've updated the accompanying note to state clearly that the lines have no effect on model output, but I guess we need to keep the lines to avoid uninitialized variables. (details)

Uncommenting diffusion.F90 k=1 lines again to fix Oracle uninit var test.  I've updated the accompanying note to state clearly that the lines have no effect on model output, but I guess we need to keep the lines to avoid uninitialized variables.