meta: Move private defines to a private header

These defines are unused outside of mutter, and actually not
desirable to export. Move them to a private header.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/859

src/core/main-private.h

@@ -37,6 +37,14 @@ typedef enum _MetaDisplayPolicy
   META_DISPLAY_POLICY_DISABLED,
 } MetaDisplayPolicy;
 
+#define META_POINT_IN_RECT(xcoord, ycoord, rect) \
+ ((xcoord) >= (rect).x &&                   \
+  (xcoord) <  ((rect).x + (rect).width) &&  \
+  (ycoord) >= (rect).y &&                   \
+  (ycoord) <  ((rect).y + (rect).height))
+
+#define META_GRAB_OP_GET_BASE_TYPE(op) (op & 0x00FF)
+
 META_EXPORT_TEST
 void meta_override_compositor_configuration (MetaCompositorType compositor_type,
                                              GType              backend_gtype);

src/core/stack.c

@@ -32,6 +32,7 @@
 #include "backends/meta-logical-monitor.h"
 #include "cogl/cogl-trace.h"
 #include "core/frame.h"
+#include "core/main-private.h"
 #include "core/meta-workspace-manager-private.h"
 #include "core/window-private.h"
 #include "meta/group.h"