query not shoing unstable accepted when stable on other arch

[ben]

when running paludis -q on a package wich i allow unsable packages i normally see a ~ sign by it to show it is unstable however if it is stable on another arch the sign is missing, ans show as a regular stable package

thank ben

example output (with unimportant bits removed), note that 1.0.1 is not marked as unstable, but at the botom is showen as ~amd64 (running on amd64):

$ paludis -qM x11-libs/libFS::gentoo * x11-libs/libFS::gentoo

gentoo: 1.0.0 1.0.1* {:0}

...

KEYWORDS: alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x86-fbsd

...

[ciaranm]

We consider something to be "accepted unstable" if it doesn't have any stable keywords. If it's stable anywhere, we don't consider it unstable -- this is intentional, because there's no particular reason to assume keywords and archs have any particular consistency or relationship.