add hypre exercises

https://redmine.scorec.rpi.edu/anonsvn/fastmath/docs/ATPESC_2014/Exercises/README.html
ignore cobalt output files
add sundials exercises
add superlu exercises
fastmath readme
add script to download slides from agenda page...
Add exercise.py from paraview presentation.
ignore image output from paraview
ignore binary output dir
add chombo example sources
ignore output files
add paals example 1 (albany)
add example 3, even though it did not work for me
Add example 5 for paals
add readme for paals
Unpack mpi2tutorial for mpi-io and pnetcdf.
fix typo in create_struct call
fix mlife-io-pnetcdf.c...
add gitignore and README for mlife io exercise