[petsc-dev] monitor routine for final "iteration"

For TS I had wanted a way for the monitor routines to know that they were in the final iteration (time-step) so I put in a hack with a time step == -1. Lisandro proposed and implemented a far better solution of just making sure that ts->convergedreason was set for EXACTLY the last call to monitor and using that to indicate the final time-step. I suggest we do the same thing for KSP and SNES. This will require moving around slightly the location of Monitor() in the solvers but I took a quick look at the codes and it looks doable. Does this sound like a reasonable change to the code? Barry