Attached is a patch that adds the seqan library to the bioinformatics
module.  Seqan is a header library, so it doesn't need to be built; it's
included in the build procedure of tools using it.

This package does not include the application bundle, which is really
just a number of applications by the same author depending on Seqan.

The documentation is 7.8MB and the includes are 3.6MB heavy, so I
decided to split the outputs.