[arch-haskell] Package Signing

Hi Magnus, It's time to nag you again about package signing. I can give you a script to batch sign packages, run repo-add, then sign the generated repo with a single passphrase prompt. Obviously I don't know how well that fits with your current release method, but it should be possible to set something up that is minimally invasive and I'll gladly help if I can. Regards, Xyne