cogl: Don't define the deprecated ref/unref accessors for new types

Previously COGL_OBJECT_DEFINE would always define deprecated
cogl_$type_{ref,unref} functions even if the type is new or if the
type is entirely internal. An application would still find it
difficult to use these because they wouldn't be in the headers, but it
still looks bad that they are exported from the shared library. This
patch changes it so that the deprecated ref counting functions are
defined using a separate macro and only the types that have these
functions in the headers call this macro.

cogl/cogl-framebuffer.c

@@ -115,6 +115,7 @@ static void _cogl_offscreen_free (CoglOffscreen *offscreen);
 
 COGL_OBJECT_DEFINE (Onscreen, onscreen);
 COGL_OBJECT_DEFINE (Offscreen, offscreen);
+COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (offscreen);
 
 /* XXX:
  * The CoglObject macros don't support any form of inheritance, so for

cogl/cogl-material.c

@@ -112,6 +112,7 @@ static const CoglMaterialBackend *backends[COGL_MATERIAL_N_BACKENDS];
 #endif
 
 COGL_OBJECT_DEFINE (Material, material);
+COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (material);
 COGL_OBJECT_DEFINE (MaterialLayer, material_layer);
 
 static void

cogl/cogl-object-private.h

@@ -166,7 +166,9 @@ cogl_is_##type_name (void *object)                              \
                                                                 \
   return (obj->klass->type ==                                   \
           _cogl_object_##type_name##_get_type ());              \
-}                                                               \
+}
+
+#define COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING(type_name)   \
                                                                 \
 void * G_GNUC_DEPRECATED                                        \
 cogl_##type_name##_ref (void *object)                           \

cogl/cogl-vertex-buffer.c

@@ -212,6 +212,7 @@ static void _cogl_vertex_buffer_free (CoglVertexBuffer *buffer);
 static void _cogl_vertex_buffer_indices_free (CoglVertexBufferIndices *buffer_indices);
 
 COGL_HANDLE_DEFINE (VertexBuffer, vertex_buffer);
+COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (vertex_buffer);
 COGL_HANDLE_DEFINE (VertexBufferIndices, vertex_buffer_indices);
 
 CoglHandle

cogl/driver/gl/cogl-shader.c

@@ -43,6 +43,7 @@
 static void _cogl_shader_free (CoglShader *shader);
 
 COGL_HANDLE_DEFINE (Shader, shader);
+COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (shader);
 
 static void
 _cogl_shader_free (CoglShader *shader)

cogl/driver/gles/cogl-shader.c

@@ -37,6 +37,7 @@
 static void _cogl_shader_free (CoglShader *shader);
 
 COGL_HANDLE_DEFINE (Shader, shader);
+COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (shader);
 
 static void
 _cogl_shader_free (CoglShader *shader)