grsecurity: update stable/testing kernels, refactoring

This updates the new stable kernel to 3.14, and the new testing kernel
to 3.15.

This also removes the vserver kernel, since it's probably not nearly as
used.

Signed-off-by: Austin Seipp <aseipp@pobox.com>

nixos/modules/security/grsecurity.nix

@@ -6,12 +6,10 @@ let
   cfg = config.security.grsecurity;
 
   customGrsecPkg =
-    (import ../../../pkgs/build-support/grsecurity
-      {
-        inherit lib pkgs;
-        grsecOptions = cfg;
-      }
-    ).grsecPackage;
+    (import ../../../pkgs/build-support/grsecurity {
+      grsecOptions = cfg;
+      inherit pkgs lib;
+    }).grsecPackage;
 in
 {
   options = {
@@ -36,14 +34,6 @@ in
         '';
       };
 
-      vserver = mkOption {
-        type = types.bool;
-        default = false;
-        description = ''
-          Enable the stable grsecurity/vserver patches, based on Linux 3.2.
-        '';
-      };
-
       testing = mkOption {
         type = types.bool;
         default = false;
@@ -246,9 +236,6 @@ in
             both.
           '';
         }
-        { assertion = (cfg.testing -> !cfg.vserver);
-          message   = "The vserver patches are only supported in the stable kernel.";
-        }
         { assertion = (cfg.config.restrictProc -> !cfg.config.restrictProcWithGroup) ||
                       (cfg.config.restrictProcWithGroup -> !cfg.config.restrictProc);
           message   = "You cannot enable both restrictProc and restrictProcWithGroup";