nix-copy-closure / build-remote.pl: Disable signature checking

This restores the Nix 1.11 behaviour.

scripts/build-remote.pl.in

@@ -271,5 +271,5 @@ if (scalar @outputs2 > 0) {
     writeInt(0, $to); # don't sign
     writeStrings(\@outputs2, $to);
     $ENV{'NIX_HELD_LOCKS'} = "@outputs2"; # FIXME: ugly
-    importPaths(fileno($from));
+    importPaths(fileno($from), 1);
 }

scripts/nix-copy-closure.in

@@ -97,7 +97,7 @@ else { # Copy FROM the remote machine.
         writeInt(5, $to); # == cmdExportPaths
         writeInt(0, $to); # obsolete
         writeStrings(\@missing, $to);
-        importPaths(fileno($from));
+        importPaths(fileno($from), 1);
     }
 
 }