work around a strance change in gpg behavior; needs a trustdb to exist even when using --trust-model=always

Utility/Gpg.hs

@@ -325,6 +325,8 @@ testHarness a = do
 		base <- getTemporaryDirectory
 		dir <- mktmpdir $ base </> "gpgtmpXXXXXX"
 		void $ setEnv var dir True
+		-- For some reason, recent gpg needs a trustdb to be set up.
+		_ <- pipeStrict [Params "--trust-model auto --update-trustdb"] []
 		_ <- pipeStrict [Params "--import -q"] $ unlines
 			[testSecretKey, testKey]
 		return dir