This stuff is private to vcl

Change-Id: I623da89ea390a07bd6a3236b5c099be094a7acde
diff --git a/include/vcl/opengl/glxtest.hxx b/vcl/inc/opengl/x11/glxtest.hxx
similarity index 84%
rename from include/vcl/opengl/glxtest.hxx
rename to vcl/inc/opengl/x11/glxtest.hxx
index 687038f..979f795 100644
--- a/include/vcl/opengl/glxtest.hxx
+++ b/vcl/inc/opengl/x11/glxtest.hxx
@@ -7,8 +7,8 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#ifndef INCLUDED_VCL_OPENGL_GLXTEST_HXX
#define INCLUDED_VCL_OPENGL_GLXTEST_HXX
#ifndef INCLUDED_VCL_INC_OPENGL_X11_GLXTEST_HXX
#define INCLUDED_VCL_INC_OPENGL_X11_GLXTEST_HXX

#include <vcl/dllapi.h>

diff --git a/vcl/opengl/x11/X11DeviceInfo.cxx b/vcl/opengl/x11/X11DeviceInfo.cxx
index e9754ea..49593c7 100644
--- a/vcl/opengl/x11/X11DeviceInfo.cxx
+++ b/vcl/opengl/x11/X11DeviceInfo.cxx
@@ -8,8 +8,8 @@
 */

#include "opengl/x11/X11DeviceInfo.hxx"
#include "opengl/x11//glxtest.hxx"

#include <vcl/opengl/glxtest.hxx>
#include <rtl/ustring.hxx>

#include <unistd.h>
diff --git a/vcl/source/salmain/salmain.cxx b/vcl/source/salmain/salmain.cxx
index ee9ed69..32d5737 100644
--- a/vcl/source/salmain/salmain.cxx
+++ b/vcl/source/salmain/salmain.cxx
@@ -29,7 +29,7 @@
#include "salinst.hxx"

#if defined( UNX ) && !defined MACOSX && !defined IOS && !defined ANDROID && !defined LIBO_HEADLESS
#include <vcl/opengl/glxtest.hxx>
#include "opengl/x11/glxtest.hxx"
#endif

SAL_IMPLEMENT_MAIN() {
diff --git a/vcl/unx/glxtest.cxx b/vcl/unx/glxtest.cxx
index 12811e8..efe5591 100644
--- a/vcl/unx/glxtest.cxx
+++ b/vcl/unx/glxtest.cxx
@@ -26,7 +26,7 @@
#include "stdint.h"
#include <string.h>

#include <vcl/opengl/glxtest.hxx>
#include "opengl/x11/glxtest.hxx"

#ifdef __SUNPRO_CC
#include <stdio.h>