css: Split generic parse/print functions out

It seems to be some sort of sport for me to split them out and merge
them back in...

gtk/gtkcssstylefuncsprivate.h

@@ -0,0 +1,35 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GTK_CSS_STYLE_FUNCS_PRIVATE_H__
+#define __GTK_CSS_STYLE_FUNCS_PRIVATE_H__
+
+#include "gtkcssparserprivate.h"
+
+G_BEGIN_DECLS
+
+gboolean            _gtk_css_style_parse_value             (GValue                 *value,
+                                                            GtkCssParser           *parser,
+                                                            GFile                  *base);
+void                _gtk_css_style_print_value             (const GValue           *value,
+                                                            GString                *string);
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_STYLE_FUNCS_PRIVATE_H__ */