[arch-ports] Arch32 base group signature

[Andrew Fomin]

Hello, Erich!

Thanks for advice, I've tried it with some level of success, at least I
didn't get as much errors as it was before. Is this possible that some keys
from some packages are broken on non-existed at all? Strangely enough, I've
downloaded ISO image from previous month (may) and it went absolutely
smooth with no problems hwatsoever.