ros-mavlink: add recipe

A patch for the config file is also necessary because the include directory
path was being hardcoded in the generated file, which caused problems for cross
compilation. That patch has already been applied on upstream but for a newer
version, so we're backporting it here.

Apparently, the Kinetic release for this package is supposed to work fine with
indigo distribution. That could be tried later, so that we can get rid of the
local patch.

Authors: JochiPochi <john.aleman@cyphyworks.com>
         Gustavo Jose de Sousa <gustavo.sousa@intel.com>

recipes-ros/ros-mavlink/files/0001-Fix-PKG_NAME-_INCLUDE_DIR-variable.patch

+From af522ba6b85be00a712618c719e831b941a8ffdc Mon Sep 17 00:00:00 2001
+From: Gustavo Jose de Sousa <gustavo.sousa@intel.com>
+Date: Wed, 16 Nov 2016 13:23:49 -0200
+Subject: [PATCH] Fix @PKG_NAME@_INCLUDE_DIR variable
+
+The previous approach hardcoded the path to the include directory and cross
+compilation using a sysroot directory would fail. This patch takes the
+resulting config files generated from other ROS packages as reference.
+
+Upstream-Status: Backport [https://github.com/mavlink/mavlink-gbp-release/pull/5]
+---
+ config.cmake.in | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/config.cmake.in b/config.cmake.in
+index b62ab64..34bed61 100644
+--- a/config.cmake.in
++++ b/config.cmake.in
+@@ -3,7 +3,8 @@ if (@PKG_NAME@_CONFIG_INCLUDED)
+ endif()
+ set(@PKG_NAME@_CONFIG_INCLUDED TRUE)
+ 
+-set(@PKG_NAME@_INCLUDE_DIRS "@CMAKE_INSTALL_PREFIX@/include")
++get_filename_component(include "${@PKG_NAME@_DIR}/../../../include" ABSOLUTE)
++set(@PKG_NAME@_INCLUDE_DIRS ${include})
+ set(@PKG_NAME@_DIALECTS @PKG_MAVLINK_DIALECTS@)
+ set(@PKG2_NAME@_DIALECTS @PKG2_MAVLINK_DIALECTS@)
+ 
+-- 
+2.10.2
+

recipes-ros/ros-mavlink/ros-mavlink_git.bb

+DESCRIPTION = "MAVLink message marshaling library"
+LICENSE = "LGPLv3"
+LIC_FILES_CHKSUM = "file://COPYING;md5=54ad3cbe91bebcf6b1823970ff1fb97f"
+
+SRC_URI = "git://github.com/mavlink/mavlink-gbp-release.git;branch=release/${ROSDISTRO}/mavlink"
+SRCREV = "${AUTOREV}"
+
+SRC_URI += "file://0001-Fix-PKG_NAME-_INCLUDE_DIR-variable.patch"
+
+S = "${WORKDIR}/git"
+
+DEPENDS = "python-setuptools"
+
+inherit catkin