Fix several whitespace nitpicks
Simplify automake input files

Copy some description comments from the original makefiles.
Clean up EXTRA_DIST for the examples
Fix overlinking the tests and examples
Fix the order of LAPACK/BLAS libs

LAPACK may depend on BLAS, therefore -llapack needs to be given before
-lblas.
Re-add the bug_1323 test
Re-add PARPACK psndrv1 examples
Fix `make distcheck`

As a compromise for anyone who doesn't have MPI support but wants to run
`make distcheck`, only check PARPACK if --enable-mpi was given during
./configure.
Simplify more automake input files