Move autotestkeywords to testsuite

All the 'make check' and installed tests are now in testsuite/,
and tests/ is just a collection manual test programs.

testsuite/gtk/autotestkeywords.cc

@@ -0,0 +1,39 @@
+#include <gtk/gtk.h>
+
+#ifdef GDK_WINDOWING_DIRECTFB
+#define gdk_display gdk_display_directfb
+#include <gdk/directfb/gdkdirectfb.h>
+#undef gdk_display
+#undef GDK_DISPLAY
+#undef GDK_ROOT_WINDOW
+#endif
+
+#ifdef GDK_WINDOWING_QUARTZ
+#if HAVE_OBJC
+#define gdk_display gdk_display_quartz
+#include <gdk/quartz/gdkquartz.h>
+#undef gdk_display
+#undef GDK_DISPLAY
+#undef GDK_ROOT_WINDOW
+#endif
+#endif
+
+#ifndef __OBJC__
+#ifdef GDK_WINDOWING_WIN32
+#define gdk_display gdk_display_win32
+#include <gdk/win32/gdkwin32.h>
+#undef gdk_display
+#undef GDK_DISPLAY
+#undef GDK_ROOT_WINDOW
+#endif
+#endif
+
+#ifdef GDK_WINDOWING_X11
+#define gdk_display gdk_display_x11
+#include <gdk/x11/gdkx.h>
+#undef gdk_display
+#undef GDK_DISPLAY
+#undef GDK_ROOT_WINDOW
+#endif
+
+int main() { return 0; }