petsc-dev recompile needed

[Barry Smith <bsmith@xxxxxxxxxxx>]

  I have changed some of the data structures for the various AIJ matrix
formats. On you next pull you will need to recompile all the matrix
code.

  cd src/mat
  make ACTION=libfast tree

 Let me know if the behavior of the matrices changes due to me update
to the code.

   Barry

I'm starting to get the various AIJ matrices to shared more common data
structures and code.