- clean up log message
- When --deb-shlibs is given and no --after-install or --after-remove
  are given, automatically add appropriate ldconfig scripts. This quiets
  one more lintian error as well as being less surprising by default
  (linux's ldconfig manual operation is pretty silly!)
- don't write conffiles if there isn't any (quiets lintian)
- don't write md5sum entries for symlinks (quiets lintian)
- improve 'scripts' attr docs
- expand_path on template files