dnf: add a recipe

This is replacing Smart package manager, which is unsupported upstream, and has a growing
amount of issues (lack of python 3.x support in particular). We identified dnf as
the only feasible replacement.

(From OE-Core rev: 2da1f03ad5957fc130f9d4fac30f0048873e9d7c)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/dnf/dnf/0030-Run-python-scripts-using-env.patch

@@ -0,0 +1,48 @@
+From 9c8d545152b35d8943be72b9503414a53e1ebf7c Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Fri, 30 Dec 2016 18:29:37 +0200
+Subject: [PATCH 30/30] Run python scripts using env
+
+Otherwise the build tools hardcode the python path into them.
+
+Upstream-Status: Inappropriate [oe-core specific]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+---
+ bin/dnf-automatic.in | 2 +-
+ bin/dnf.in           | 2 +-
+ bin/yum.in           | 2 +-
+ 3 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/bin/dnf-automatic.in b/bin/dnf-automatic.in
+index 5b06aa26..9f6f703e 100755
+--- a/bin/dnf-automatic.in
++++ b/bin/dnf-automatic.in
+@@ -1,4 +1,4 @@
+-#!@PYTHON_EXECUTABLE@
++#!/usr/bin/env python
+ # dnf-automatic executable.
+ #
+ # Copyright (C) 2014-2016 Red Hat, Inc.
+diff --git a/bin/dnf.in b/bin/dnf.in
+index 645d0f06..ab141abd 100755
+--- a/bin/dnf.in
++++ b/bin/dnf.in
+@@ -1,4 +1,4 @@
+-#!@PYTHON_EXECUTABLE@
++#!/usr/bin/env python
+ # The dnf executable script.
+ #
+ # Copyright (C) 2012-2016 Red Hat, Inc.
+diff --git a/bin/yum.in b/bin/yum.in
+index f1fee071..013dc8c5 100755
+--- a/bin/yum.in
++++ b/bin/yum.in
+@@ -1,4 +1,4 @@
+-#!@PYTHON_EXECUTABLE@
++#!/usr/bin/env python
+ # The dnf executable script.
+ #
+ # Copyright (C) 2016 Red Hat, Inc.
+-- 
+2.11.0
+