gtk: Make functions static that don't need to be non-static

Also remove the starting underscore from function names where
appropriate, as those functions are static now and not exported anymore.

This is part of a bunch of fixes for gcc complaining about
-Wmissing-declarations.

gtk/gtkbuilderparser.c

@@ -641,9 +641,9 @@ _free_signal_info (SignalInfo *info,
   g_slice_free (SignalInfo, info);
 }
 
-void
-_free_requires_info (RequiresInfo *info,
-		     gpointer user_data)
+static void
+free_requires_info (RequiresInfo *info,
+                    gpointer user_data)
 {
   g_free (info->library);
   g_slice_free (RequiresInfo, info);
@@ -958,7 +958,7 @@ end_element (GMarkupParseContext *context,
 			 req_info->major, req_info->minor,
 			 GTK_MAJOR_VERSION, GTK_MINOR_VERSION);
 	}
-      _free_requires_info (req_info, NULL);
+      free_requires_info (req_info, NULL);
     }
   else if (strcmp (element_name, "interface") == 0)
     {
@@ -1110,7 +1110,7 @@ free_info (CommonInfo *info)
   else if (strcmp (info->tag.name, "signal") == 0)
     _free_signal_info ((SignalInfo *)info, NULL);
   else if (strcmp (info->tag.name, "requires") == 0)
-    _free_requires_info ((RequiresInfo *)info, NULL);
+    free_requires_info ((RequiresInfo *)info, NULL);
   else if (strcmp (info->tag.name, "menu") == 0)
     free_menu_info ((MenuInfo *)info);
   else

gtk/gtkcssimage.c

@@ -69,7 +69,7 @@ gtk_css_image_real_compute (GtkCssImage             *image,
   return g_object_ref (image);
 }
 
-GtkCssImage *
+static GtkCssImage *
 gtk_css_image_real_transition (GtkCssImage *start,
                                GtkCssImage *end,
                                guint        property_id,
@@ -375,7 +375,7 @@ _gtk_css_image_get_surface (GtkCssImage     *image,
   return result;
 }
 
-GType
+static GType
 gtk_css_image_get_parser_type (GtkCssParser *parser)
 {
   static const struct {

gtk/gtkcssimagegradient.c

@@ -48,7 +48,7 @@ gtk_css_image_gradient_compute (GtkCssImage             *image,
   return GTK_CSS_IMAGE (copy);
 }
 
-cairo_pattern_t *
+static cairo_pattern_t *
 fade_pattern (cairo_pattern_t *pattern,
               double           opacity)
 {
@@ -82,7 +82,7 @@ fade_pattern (cairo_pattern_t *pattern,
   return pattern;
 }
 
-cairo_pattern_t *
+static cairo_pattern_t *
 transition_pattern (cairo_pattern_t *start,
                     cairo_pattern_t *end,
                     double           progress)
@@ -141,7 +141,7 @@ transition_pattern (cairo_pattern_t *start,
   return result;
 }
 
-GtkCssImage *
+static GtkCssImage *
 gtk_css_image_gradient_transition (GtkCssImage *start_image,
                                    GtkCssImage *end_image,
                                    guint        property_id,

gtk/gtkcssparser.c

@@ -885,11 +885,11 @@ _gtk_css_parser_read_url (GtkCssParser *parser)
   return file;
 }
 
-void
-_gtk_css_parser_resync_internal (GtkCssParser *parser,
-                                 gboolean      sync_at_semicolon,
-                                 gboolean      read_sync_token,
-                                 char          terminator)
+static void
+gtk_css_parser_resync_internal (GtkCssParser *parser,
+                                gboolean      sync_at_semicolon,
+                                gboolean      read_sync_token,
+                                char          terminator)
 {
   gsize len;
 
@@ -984,7 +984,7 @@ _gtk_css_parser_read_value (GtkCssParser *parser)
   start = parser->data;
 
   /* This needs to be done better */
-  _gtk_css_parser_resync_internal (parser, TRUE, FALSE, '}');
+  gtk_css_parser_resync_internal (parser, TRUE, FALSE, '}');
 
   result = g_strndup (start, parser->data - start);
   if (result)
@@ -1010,5 +1010,5 @@ _gtk_css_parser_resync (GtkCssParser *parser,
 {
   g_return_if_fail (GTK_IS_CSS_PARSER (parser));
 
-  _gtk_css_parser_resync_internal (parser, sync_at_semicolon, TRUE, terminator);
+  gtk_css_parser_resync_internal (parser, sync_at_semicolon, TRUE, terminator);
 }

gtk/gtkentrycompletion.c

@@ -1584,8 +1584,8 @@ _gtk_entry_completion_resize_popup (GtkEntryCompletion *completion)
   return above;
 }
 
-void
-_gtk_entry_completion_popup (GtkEntryCompletion *completion)
+static void
+gtk_entry_completion_popup (GtkEntryCompletion *completion)
 {
   GtkTreeViewColumn *column;
   GtkStyleContext *context;
@@ -2182,7 +2182,7 @@ gtk_entry_completion_timeout (gpointer data)
           if (gtk_widget_get_visible (completion->priv->popup_window))
             _gtk_entry_completion_resize_popup (completion);
           else
-            _gtk_entry_completion_popup (completion);
+            gtk_entry_completion_popup (completion);
         }
       else
         _gtk_entry_completion_popdown (completion);

gtk/gtkplug.c

@@ -441,16 +441,16 @@ _gtk_plug_add_to_socket (GtkPlug   *plug,
   g_signal_emit_by_name (socket_, "plug-added");
 }
 
-/**
- * _gtk_plug_send_delete_event:
+/*
+ * gtk_plug_send_delete_event:
  * @widget: a #GtkWidget
  *
  * Send a GDK_DELETE event to the @widget and destroy it if
  * necessary. Internal GTK function, called from this file or the
  * backend-specific GtkPlug implementation.
  */
-void
-_gtk_plug_send_delete_event (GtkWidget *widget)
+static void
+gtk_plug_send_delete_event (GtkWidget *widget)
 {
   GdkEvent *event = gdk_event_new (GDK_DELETE);
 
@@ -530,7 +530,7 @@ _gtk_plug_remove_from_socket (GtkPlug   *plug,
     gtk_widget_destroy (GTK_WIDGET (socket_));
 
   if (window)
-    _gtk_plug_send_delete_event (widget);
+    gtk_plug_send_delete_event (widget);
 
   g_object_unref (plug);
 
@@ -895,7 +895,7 @@ gtk_plug_filter_func (GdkXEvent *gdk_xevent,
 		if (xre->parent == GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
 		  {
 		    GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: calling gtk_plug_send_delete_event()"));
-		    _gtk_plug_send_delete_event (widget);
+		    gtk_plug_send_delete_event (widget);
 
 		    g_object_notify (G_OBJECT (plug), "embedded");
 		  }

gtk/gtkrbtree.c

@@ -973,11 +973,11 @@ _gtk_rbtree_node_get_index (GtkRBTree *tree,
   return retval;
 }
 
-gint
-_gtk_rbtree_real_find_offset (GtkRBTree  *tree,
-			      gint        height,
-			      GtkRBTree **new_tree,
-			      GtkRBNode **new_node)
+static gint
+gtk_rbtree_real_find_offset (GtkRBTree  *tree,
+			     gint        height,
+			     GtkRBTree **new_tree,
+			     GtkRBNode **new_node)
 {
   GtkRBNode *tmp_node;
 
@@ -1021,14 +1021,14 @@ _gtk_rbtree_real_find_offset (GtkRBTree  *tree,
 	  *new_node = tmp_node;
 	  return (height - tmp_node->left->offset);
 	}
-      return _gtk_rbtree_real_find_offset (tmp_node->children,
-					   height - tmp_node->left->offset -
-					   (tmp_node->offset -
-					    tmp_node->left->offset -
-					    tmp_node->right->offset -
-					    tmp_node->children->root->offset),
-					   new_tree,
-					   new_node);
+      return gtk_rbtree_real_find_offset (tmp_node->children,
+					  height - tmp_node->left->offset -
+					  (tmp_node->offset -
+					   tmp_node->left->offset -
+					   tmp_node->right->offset -
+					   tmp_node->children->root->offset),
+					  new_tree,
+					  new_node);
     }
   *new_tree = tree;
   *new_node = tmp_node;
@@ -1037,9 +1037,9 @@ _gtk_rbtree_real_find_offset (GtkRBTree  *tree,
 
 gint
 _gtk_rbtree_find_offset (GtkRBTree  *tree,
-			      gint        height,
-			      GtkRBTree **new_tree,
-			      GtkRBNode **new_node)
+			 gint        height,
+			 GtkRBTree **new_tree,
+			 GtkRBNode **new_node)
 {
   g_assert (tree);
 
@@ -1051,7 +1051,7 @@ _gtk_rbtree_find_offset (GtkRBTree  *tree,
 
       return 0;
     }
-  return _gtk_rbtree_real_find_offset (tree, height, new_tree, new_node);
+  return gtk_rbtree_real_find_offset (tree, height, new_tree, new_node);
 }
 
 gboolean

gtk/gtkstyleproperties.c

@@ -279,7 +279,7 @@ gtk_style_properties_finalize (GObject *object)
   G_OBJECT_CLASS (gtk_style_properties_parent_class)->finalize (object);
 }
 
-GtkStyleProperties *
+static GtkStyleProperties *
 gtk_style_properties_get_style (GtkStyleProvider *provider,
                                 GtkWidgetPath    *path)
 {

gtk/gtktoolpalette.c

@@ -1298,9 +1298,9 @@ gtk_tool_palette_get_style (GtkToolPalette *palette)
   return palette->priv->style;
 }
 
-gint
-_gtk_tool_palette_compare_groups (gconstpointer a,
-                                  gconstpointer b)
+static gint
+gtk_tool_palette_compare_groups (gconstpointer a,
+                                 gconstpointer b)
 {
   const GtkToolItemGroupInfo *group_a = a;
   const GtkToolItemGroupInfo *group_b = b;
@@ -1351,7 +1351,7 @@ gtk_tool_palette_set_group_position (GtkToolPalette   *palette,
   group_new->pos = position;
   group_old->pos = old_position;
 
-  g_ptr_array_sort (palette->priv->groups, _gtk_tool_palette_compare_groups);
+  g_ptr_array_sort (palette->priv->groups, gtk_tool_palette_compare_groups);
 
   gtk_widget_queue_resize (GTK_WIDGET (palette));
 }

gtk/updateiconcache.c

@@ -88,9 +88,9 @@ static int check_dir_mtime (const char        *dir,
   return 0;
 }
 
- gboolean
- is_cache_up_to_date (const gchar *path)
- {
+static gboolean
+is_cache_up_to_date (const gchar *path)
+{
   gchar *cache_path;
   gint retval;