Some EGL headers pull in X11 defines which break eglconvenience

* Adds a missing include to qeglplatformcontext.cpp
* Fix namespace collision on CursorShape, pulled in from X11/X.h
* Do not pass MESA_EGL_NO_X11_HEADERS when xcb is use
* Reorder includes to have the X11-header the last include

[based on patch from Yocto project]
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Updated to fix issue in qeglplatformscreen (reorder includes, see also
http://lists.qt-project.org/pipermail/development/2013-March/010511.html)
Signed-off-by: Marc Andre <marc.andre@netline.ch>

diff -Nuar a/src/platformsupport/eglconvenience/eglconvenience.pri b/src/platformsupport/eglconvenience/eglconvenience.pri
--- a/src/platformsupport/eglconvenience/eglconvenience.pri	2014-08-07 16:53:50.038277168 -0400
+++ b/src/platformsupport/eglconvenience/eglconvenience.pri	2014-08-07 16:54:52.874278651 -0400
@@ -30,8 +30,10 @@
         }
     }
 
-    # Avoid X11 header collision
-    DEFINES += MESA_EGL_NO_X11_HEADERS
+    !contains(QT_CONFIG,xcb) {
+        # Avoid X11 header collision
+        DEFINES += MESA_EGL_NO_X11_HEADERS
+    }
 
     contains(QT_CONFIG,xlib) {
         HEADERS += \
diff -Nuar a/src/platformsupport/eglconvenience/qeglplatformcontext.cpp b/src/platformsupport/eglconvenience/qeglplatformcontext.cpp
--- a/src/platformsupport/eglconvenience/qeglplatformcontext.cpp	2014-08-07 16:53:50.038277168 -0400
+++ b/src/platformsupport/eglconvenience/qeglplatformcontext.cpp	2014-08-07 16:56:00.630280249 -0400
@@ -39,6 +39,7 @@
 **
 ****************************************************************************/
 
+#include <qtextstream.h>
 #include "qeglplatformcontext_p.h"
 #include "qeglconvenience_p.h"
 #include "qeglpbuffer_p.h"
--- a/src/platformsupport/eglconvenience/qeglplatformcursor_p.h	2014-08-07 16:53:50.038277168 -0400
+++ b/src/platformsupport/eglconvenience/qeglplatformcursor_p.h	2014-08-07 16:58:49.014284222 -0400
@@ -42,6 +42,11 @@
 #ifndef QEGLPLATFORMCURSOR_H
 #define QEGLPLATFORMCURSOR_H
 
+// avoid namespace collision with X11/X.h
+#ifdef CursorShape
+#undef CursorShape
+#endif
+
 #include <qpa/qplatformcursor.h>
 #include <qpa/qplatformscreen.h>
 
--- qt5base-5.5.0.orig/src/platformsupport/eglconvenience/qeglplatformcursor.cpp
+++ qt5base-5.5.0/src/platformsupport/eglconvenience/qeglplatformcursor.cpp
@@ -41,8 +41,8 @@
 
 #include <QtGui/private/qguiapplication_p.h>
 
-#include "qeglplatformcursor_p.h"
 #include "qeglplatformintegration_p.h"
+#include "qeglplatformcursor_p.h"
 #include "qeglplatformscreen_p.h"
 
 QT_BEGIN_NAMESPACE
--- qtbase-opensource-src-5.5.0.orig/src/platformsupport/eglconvenience/qeglplatformscreen.cpp	2015-09-01 14:46:57.116883353 +0200
+++ qtbase-opensource-src-5.5.0/src/platformsupport/eglconvenience/qeglplatformscreen.cpp	2015-09-01 14:47:36.560882333 +0200
@@ -31,11 +31,11 @@
 **
 ****************************************************************************/

-#include "qeglplatformscreen_p.h"
-#include "qeglplatformwindow_p.h"
 #include <QtGui/qwindow.h>
 #include <qpa/qwindowsysteminterface.h>
 #include <QtPlatformSupport/private/qopenglcompositor_p.h>
+#include "qeglplatformscreen_p.h"
+#include "qeglplatformwindow_p.h"

 QT_BEGIN_NAMESPACE