Version up : busybox 1.20.1

Remove busybox dirty hack since the workarounded problem is
fixed in new version.

component/busybox/buildout.cfg

 [buildout]
-extends =
-  ../patch/buildout.cfg
 
-# https://bugs.busybox.net/show_bug.cgi?id=4838
-[busybox-1.19.3.packed_hack.patch]
-recipe = hexagonit.recipe.download
-url = ${:_profile_base_location_}/${:filename}
-md5sum = faa5ce46be086763202d7ca24601fbde
-filename = busybox-1.19.3.packed_hack.patch
-download-only = true
+parts = busybox
 
 [busybox]
 recipe = slapos.recipe.build
-url = http://busybox.net/downloads/busybox-1.19.4.tar.bz2
-md5sum = 9c0cae5a0379228e7b55e5b29528df8e
-patch-binary = ${patch:location}/bin/patch
-patch-options = -p1
-patches =
-  ${busybox-1.19.3.packed_hack.patch:location}/${busybox-1.19.3.packed_hack.patch:filename}
+url = http://git.busybox.net/busybox/snapshot/busybox-1_20_1.tar.gz
+md5sum = 15758fc37ae8051d6def1b8afb691821
 script =
     extract_dir = self.extract(self.download(%(url)r, %(md5sum)r))
     workdir = guessworkdir(extract_dir)
-    self.applyPatchList(self.options.get('patches'), self.options.get('patch-options'), self.options.get('patch-binary'), workdir)
-    call(['patch', 'defconfig'], cwd=workdir, env=env)
     self.logger.info("Creating default configuration")
     call(['make', 'defconfig'], cwd=workdir, env=env)
     self.logger.info("Building")

component/busybox/busybox-1.19.3.packed_hack.patch

-diff --git a/miscutils/ubi_tools.c b/miscutils/ubi_tools.c
-index 2a426db..35f44ac 100644
---- a/miscutils/ubi_tools.c
-+++ b/miscutils/ubi_tools.c
-@@ -60,6 +60,16 @@
- //kbuild:lib-$(CONFIG_UBIUPDATEVOL) += ubi_tools.o
- 
- #include "libbb.h"
-+#if 1
-+// __packed hack for broken kernel headers ubi-user.h
-+// See: https://lkml.org/lkml/2011/6/22/25
-+//   Once ubi-user.h is correctly installed without "__packed", or kernel
-+//   guys correct this another way (with a compiler header??), this can
-+//   go away.
-+# ifndef __packed
-+#  define __packed __attribute__((packed))
-+# endif // ndef __packed
-+#endif // 1
- #include <mtd/ubi-user.h>
- 
- #define OPTION_M  (1 << 0)