Automake cleanup

Here is a replacement for pull request #4.  Quick summary:
* Replace auto-generated files with a bootstrap script
* Auto-detect OpenBLAS (fixes #1)
* Fix overlinking to BLAS and LAPACK
* Fix warnings when running `autoreconf`
* Don't install the PARPACK examples
* General cleanup/simplification of automake input files
* Compile and run a couple of tests/examples that have been omitted
* Fix `make distcheck`