misc fixes: update database fully rather than just licenses, initialise a variable...

misc fixes: update database fully rather than just licenses, initialise a variable in autobuild, correct some corruption(?!), don't include orig.tar.gz if the package revision > 1.

slightly worrying how the 5 changed to a 1.

R's error reporting is pretty foul. this missing extra_deps error
manifested itself 3-4 layers down the stack trace. R doesn't give a
stack trace either. not good for large software.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/cran2deb@95 edb9625f-4e0d-4859-8d74-9fd3b1da38cb