Now retrieving local copies of all DNAcopy functions.  This makes it clearer which DNAcopy functions PSCBS relies on and it which functions.  We still might make DNAcopy install on the fly (as PSCBS used to work) to make it easier for people to install from CRAN.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/abo@546 edb9625f-4e0d-4859-8d74-9fd3b1da38cb