2.5 - AnimSys Data management stuff...

* Removed nAction struct. We'll be using good ol' bAction structs again, but putting new data in a different list. Apart from that, the data is similar enough to do so.

* Rearranged code in DNA_action_types.h while renaming the structs to avoid confusion over what is currently in use...

* Added freeing and AnimData execution loops for many other ID-types too. (NOTE: I've added AnimData in NodeTree struct too, but it's not clear to me where the relevant data-management calls should go in Nodes code).

* File writing code should now only write the new data to files

source/blender/blenkernel/intern/curve.c

@@ -52,6 +52,7 @@
 #include "DNA_scene_types.h"  
 #include "DNA_vfont_types.h"  
 
+#include "BKE_animsys.h"
 #include "BKE_anim.h"  
 #include "BKE_curve.h"  
 #include "BKE_displist.h"  
@@ -83,10 +84,6 @@ void unlink_curve(Curve *cu)
 	cu->vfont= 0;
 	if(cu->key) cu->key->id.us--;
 	cu->key= 0;
-#if 0	// XXX old animation system
-	if(cu->ipo) cu->ipo->id.us--;
-	cu->ipo= 0;
-#endif	// XXX old animation system
 }
 
 
@@ -105,6 +102,7 @@ void free_curve(Curve *cu)
 	}
 
 	unlink_curve(cu);
+	BKE_free_animdata((ID *)cu);
 	
 	if(cu->mat) MEM_freeN(cu->mat);
 	if(cu->str) MEM_freeN(cu->str);