cran2deb: bundles considered functional but need more testing.

cran2deb: bundles considered functional but need more testing.

Add a few comments describing some of the functions and what they do.

Make dependencies on bundles work by translating dependencies on
packages up into their potential bundle where no individual package is
available.

Add the repository name to debian/rules. This should allow bioc packages
to be build and included via cross-repo dependencies.

Bundle packages have Provides: fields --- these aren't actually used but
do no harm.

Bundle packages have a Description: field of just the BundleDescription
--- otherwise it may become too long.

Look in the package subdirectories of bundles for 'src' to determine if
a package is architecture independent or not.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/cran2deb@37 edb9625f-4e0d-4859-8d74-9fd3b1da38cb