message-filters: build with gcc-8

This addresses two build issues in kobuki-auto-docking [1], and
image-transport [2] due to openembedded-core updating to gcc-8.

[1] http://errors.yoctoproject.org/Errors/Details/178608/
[2] http://errors.yoctoproject.org/Errors/Details/178606/

This commit was based on a earlier commit from Martin Jansa in
his meta-ros fork, but then heavily re-worked.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>

recipes-ros/ros-comm/message-filters/0001-Changed-invocation-to-add-to-conform-template-syntax.patch

@@ -0,0 +1,35 @@
+From 65e4ce3de9747e359f38db65cf78763f75bcfbd1 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=B8rgen=20Nordmoen?= <nordmoen@users.noreply.github.com>
+Date: Fri, 4 May 2018 15:50:39 +0200
+Subject: [PATCH] Changed invocation to `add` to conform template syntax
+ (#1388)
+
+This change fixes issue #1383
+
+Upstream-Status: Backport [from melodic, https://github.com/ros/ros_comm/commit/65e4ce3de9747e359f38db65cf78763f75bcfbd1]
+
+This patch has been generated with:
+  `git format-patch -1 65e4ce3de9747e359f38db65cf78763f75bcfbd1`
+in the ros_comm repository.
+
+Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
+---
+ utilities/message_filters/include/message_filters/synchronizer.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/utilities/message_filters/include/message_filters/synchronizer.h b/utilities/message_filters/include/message_filters/synchronizer.h
+index 7891890..1c14a6f 100644
+--- a/utilities/message_filters/include/message_filters/synchronizer.h
++++ b/utilities/message_filters/include/message_filters/synchronizer.h
+@@ -355,7 +355,7 @@ private:
+   template<int i>
+   void cb(const typename mpl::at_c<Events, i>::type& evt)
+   {
+-    this->add<i>(evt);
++    this->template add<i>(evt);
+   }
+ 
+   uint32_t queue_size_;
+-- 
+2.7.4
+

recipes-ros/ros-comm/message-filters_1.11.21.bb

@@ -8,3 +8,5 @@ DEPENDS = "boost rosconsole roscpp xmlrpcpp"
 require ros-comm.inc
 
 ROS_PKG_SUBDIR = "utilities"
+
+SRC_URI += "file://0001-Changed-invocation-to-add-to-conform-template-syntax.patch;patchdir=../.."