Fix build with Qt 5.11

PR:		230884
Obtained from:	upstream

cad/librecad/files/patch-git_6c392e9

@@ -0,0 +1,41 @@
+From 6c392e903e162b9283e88f53006e929663f2e883 Mon Sep 17 00:00:00 2001
+From: Jiri Slaby <jslaby@suse.cz>
+Date: Mon, 11 Jun 2018 10:44:00 +0200
+Subject: [PATCH] fix build with Qt 5.11
+
+The new Qt removed some implicit inclusions of headers. To avoid build
+errors, add explicit includes of those we use in the sources.
+
+Signed-off-by: Jiri Slaby <jslaby@suse.cz>
+
+--- librecad/src/ui/forms/qg_commandwidget.cpp.orig	2018-02-15 20:54:45 UTC
++++ librecad/src/ui/forms/qg_commandwidget.cpp
+@@ -27,6 +27,7 @@
+ 
+ #include <algorithm>
+ 
++#include <QAction>
+ #include <QKeyEvent>
+ #include <QFileDialog>
+ #include <QSettings>
+--- librecad/src/ui/generic/colorwizard.cpp.orig	2018-02-15 20:54:45 UTC
++++ librecad/src/ui/generic/colorwizard.cpp
+@@ -27,6 +27,7 @@
+ #include "colorwizard.h"
+ #include "ui_colorwizard.h"
+ 
++#include <QAction>
+ #include <QColorDialog>
+ #include <QLineEdit>
+ #include <QListWidget>
+--- librecad/src/ui/generic/widgetcreator.cpp.orig	2018-02-15 20:54:45 UTC
++++ librecad/src/ui/generic/widgetcreator.cpp
+@@ -27,6 +27,8 @@
+ #include "widgetcreator.h"
+ #include "ui_widgetcreator.h"
+ 
++#include <QAction>
++#include <QActionGroup>
+ #include <QSettings>
+ #include <QLineEdit>
+ #include <QPushButton>