2.5 - Bones can now have custom properties (as ID-Props)

Still need to find a way to enable RNA access for these though, since RNA access to ID-Props stored in data seems to be broken...

source/blender/blenloader/intern/readfile.c

@@ -2176,9 +2176,12 @@ static void direct_link_constraints(FileData *fd, ListBase *lb)
 		
 		if (cons->type == CONSTRAINT_TYPE_PYTHON) {
 			bPythonConstraint *data= cons->data;
+			
 			link_list(fd, &data->targets);
+			
 			data->prop = newdataadr(fd, data->prop);
-			IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
+			if (data->prop)
+				IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
 		}
 	}
 }
@@ -3417,7 +3420,13 @@ static void direct_link_pose(FileData *fd, bPose *pose)
 		pchan->bone= NULL;
 		pchan->parent= newdataadr(fd, pchan->parent);
 		pchan->child= newdataadr(fd, pchan->child);
+		
 		direct_link_constraints(fd, &pchan->constraints);
+		
+		pchan->prop = newdataadr(fd, pchan->prop);
+		if (pchan->prop)
+			IDP_DirectLinkProperty(pchan->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
+		
 		pchan->iktree.first= pchan->iktree.last= NULL;
 		pchan->path= NULL;
 	}

source/blender/blenloader/intern/writefile.c

@@ -956,6 +956,11 @@ static void write_pose(WriteData *wd, bPose *pose)
 
 	/* Write channels */
 	for (chan=pose->chanbase.first; chan; chan=chan->next) {
+		/* Write ID Properties -- and copy this comment EXACTLY for easy finding
+		 of library blocks that implement this.*/
+		if (chan->prop)
+			IDP_WriteProperty(chan->prop, wd);
+		
 		write_constraints(wd, &chan->constraints);
 		
 		/* prevent crashes with autosave, when a bone duplicated in editmode has not yet been assigned to its posechannel */

source/blender/makesdna/DNA_action_types.h

@@ -52,6 +52,9 @@ struct Object;
  */
 typedef struct bPoseChannel {
 	struct bPoseChannel	*next, *prev;
+	
+	IDProperty 			*prop;		/* User-Defined Properties on this PoseChannel */			
+	
 	ListBase			constraints;/* Constraints that act on this PoseChannel */
 	char				name[32];	/* Channels need longer names than normal blender objects */
 	
@@ -419,3 +422,4 @@ typedef enum ACHAN_FLAG {
 
 #endif
 
+