made it build with 20160412

contrib/rootfs/offline_repo.json

@@ -94,21 +94,21 @@
             "tagged": true
         },
         {
-            "pkgname": "linux-image-4.6.0-040600rc1-generic",
+            "pkgname": "linux-image-4.6.0-040600rc2-generic",
             "pkgdescription": "Vanilla Linux Kernel",
             "tagged": false,
             "urls": [
-              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc1-wily/linux-image-4.6.0-040600rc1-generic_4.6.0-040600rc1.201603261930_amd64.deb",
-              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc1-wily/linux-image-4.6.0-040600rc1-generic_4.6.0-040600rc1.201603261930_i386.deb"
+              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc2-wily/linux-image-4.6.0-040600rc2-generic_4.6.0-040600rc2.201604031130_amd64.deb",
+              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc2-wily/linux-image-4.6.0-040600rc2-generic_4.6.0-040600rc2.201604031130_i386.deb"
             ]
         },
         {
-            "pkgname": "linux-headers-4.6.0-040600rc1-generic",
+            "pkgname": "linux-headers-4.6.0-040600rc2-generic",
             "pkgdescription": "Vanilla Linux Kernel Headers",
             "tagged": false,
             "urls": [
-              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc1-wily/linux-headers-4.6.0-040600rc1-generic_4.6.0-040600rc1.201603261930_amd64.deb",
-              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc1-wily/linux-headers-4.6.0-040600rc1-generic_4.6.0-040600rc1.201603261930_i386.deb"
+              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc2-wily/linux-headers-4.6.0-040600rc2-generic_4.6.0-040600rc2.201604031130_amd64.deb",
+              "http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc2-wily/linux-headers-4.6.0-040600rc2-generic_4.6.0-040600rc2.201604031130_i386.deb"
             ]
         }
       ]

patches/iso/casper-remove-needed-packages-from-unistall-manifest.patch

@@ -16,7 +16,7 @@
 -libwebkit2gtk-4.0-37:amd64
 -libwebkit2gtk-4.0-37-gtk2:amd64
  linux-signed-generic
--linux-signed-image-4.4.0-16-generic
+-linux-signed-image-4.4.0-18-generic
  linux-signed-image-generic
  localechooser-data
  lupin-casper