o Added writeFastaReferenceFile() for FastaReferenceSet for merging
  multiple FASTA files into a new one.
o Added getOrganism() to FastaReferenceSet. 

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aroma-dots@3522 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aroma-dots@3523 edb9625f-4e0d-4859-8d74-9fd3b1da38cb