Made test case 241 precheck that the given name resolves to an ipv6 address,

or the test is skipped. Ideally, we should let this test case go over a few
frequently used IPv6 localhost aliases...

tests/data/test241

@@ -26,6 +26,9 @@ HTTP-IPv6 GET (using ip6-localhost)
  <command>
 -g "http://ip6-localhost:%HTTP6PORT/241"
 </command>
+<precheck>
+./server/resolve --ipv6 ip6-localhost
+</precheck>
 </client>
 
 #

tests/runtests.pl

@@ -1058,6 +1058,7 @@ sub singletest {
                 chomp $why;
             }
         }
+        print "prechecked $cmd\n" if($verbose);
     }
 
     if($why) {

tests/server/resolve.c

@@ -125,8 +125,8 @@ int main(int argc, char *argv[])
 
     he = gethostbyname(host);
 
-    printf("Resolve '%s' %s\n",
-           host, he?"SUCCESSFUL":"FAILED");
+    if(!he)
+      printf("Resolving '%s' FAILED\n", host);
 
     return he?0:1;
   }
@@ -143,8 +143,9 @@ int main(int argc, char *argv[])
     hints.ai_flags = AI_CANONNAME;
     rc = (getaddrinfo)(host, "80", &hints, &ai);
 
-    printf("Resolve '%s' %s\n",
-           host, !rc?"SUCCESSFUL":"FAILED");
+    if(rc)
+      printf("Resolving '%s' FAILED\n", host);
+
     return !rc?0:1;
   }
 #endif