2.5

Basics for the remaining 6 spacetypes. 

Note: Andrea prefers to merge SpaceImaSel with SpaceFile
for that I'll provide a good readfile.c patch later

source/blender/editors/include/ED_space_api.h

@@ -41,6 +41,12 @@ void ED_spacetype_node(void);
 void ED_spacetype_buttons(void);
 void ED_spacetype_info(void);
 void ED_spacetype_file(void);
+void ED_spacetype_sound(void);
+void ED_spacetype_action(void);
+void ED_spacetype_nla(void);
+void ED_spacetype_script(void);
+void ED_spacetype_text(void);
+void ED_spacetype_sequencer(void);
 
 #endif /* ED_AREA_H */