Bug#714596: a package should build from scratch

[Emmanuel Bourg]

'Tedious' is probably an euphemism. There are many Java packages that
can't be bootstrapped properly due to circular dependencies. If it's not
a hard requirement mandated by the policies I don't think it's fair to
mark this as serious. It's certainly nice to have, hence the wishlist
severity, but that doesn't limit our ability to use and modify the packages.

Emmanuel Bourg