Add a config for older x86 processors without PAE support. Turn off PAT for a good measure, too

svn path=/nixpkgs/trunk/; revision=16382

pkgs/os-specific/linux/kernel/linux-2.6.31-rc3.nix

@@ -1,4 +1,4 @@
-args @ {stdenv, fetchurl, userModeLinux ? false, ...}:
+args @ {stdenv, fetchurl, userModeLinux ? false, oldI686 ? false, ...}:
 
 assert !userModeLinux;
 
@@ -21,7 +21,8 @@ import ./generic.nix (
     };
  
     config =
-      if stdenv.system == "i686-linux" then ./config-2.6.31-rc3-all-mod-i686 else
+      if stdenv.system == "i686-linux" then if oldI686 then ./config-2.6.31-rc3-all-mod-i686-older else 
+        ./config-2.6.31-rc3-all-mod-i686 else
       if stdenv.system == "x86_64-linux" then ./config-2.6.31-rc3-all-mod-amd64 else
       abort "No kernel configuration for your platform!";
   }

pkgs/top-level/all-packages.nix

@@ -5045,6 +5045,11 @@ let
     ];
   };
 
+  # For older x86 processors without PAE/PAT
+  kernel_2_6_31_rc3_old_i686 = kernelPackages_2_6_31_rc3.override {
+    oldI686 = true;
+  };
+
   /* Kernel modules are inherently tied to a specific kernel.  So
      rather than provide specific instances of those packages for a
      specific kernel, we have a function that builds those packages
@@ -5151,6 +5156,7 @@ let
   kernelPackages_2_6_28 = recurseIntoAttrs (kernelPackagesFor kernel_2_6_28);
   kernelPackages_2_6_29 = recurseIntoAttrs (kernelPackagesFor kernel_2_6_29);
   kernelPackages_2_6_31_rc3 = recurseIntoAttrs (kernelPackagesFor kernel_2_6_31_rc3);
+  kernelPackages_2_6_31_rc3_old_i686 = recurseIntoAttrs (kernelPackagesFor kernel_2_6_31_rc3_old_i686);
 
   # The current default kernel / kernel modules.
   kernelPackages = kernelPackages_2_6_28;

pkgs/top-level/release.nix

@@ -503,6 +503,11 @@ in {
     kernel = linux;
   };
 
+  kernelPackages_2_6_31_rc3_old_i686 = {
+    aufs = ["i686-linux"];
+    kernel = ["i686-linux"];
+  };
+
   strategoPackages = {
     sdf = all;
     strategoxt = all;