More fixes thanks to irc testing;

- On exit editmode and after deleting bones, a pointer in PoseChannels
  was not set NULL correctly, causing potential crashes.
- Action Window: select on 'ipo key' (little icon) didn't select/deselect
  the associated bone (old bug!)
- After unlinking an Action, the blue color in bones was not cleared

Also:

- Improved selection in editmode, doing it in 2 stages. Makes it a lot more
  accurate.

source/blender/blenkernel/intern/armature.c

@@ -731,6 +731,8 @@ static int rebuild_pose_bone(bPose *pose, Bone *bone, bPoseChannel *parchan, int
 		/* for quick detecting of next bone in chain */
 		if(bone->flag & BONE_IK_TOPARENT)
 			pchan->child= get_pose_channel(pose, bone->name);
+		else
+			pchan->child= NULL;
 	}
 	
 	return counter;

source/blender/src/editaction.c

@@ -247,10 +247,12 @@ void select_actionchannel_by_name (bAction *act, char *name, int select)
 			if (select){
 				chan->flag |= ACHAN_SELECTED;
 				hilight_channel (act, chan, 1);
+				select_poseelement_by_name(chan->name, 1);
 			}
 			else{
 				chan->flag &= ~ACHAN_SELECTED;
 				hilight_channel (act, chan, 0);
+				select_poseelement_by_name(chan->name, 0);
 			}
 			return;
 		}
@@ -567,6 +569,7 @@ static void mouse_action(int selectmode)
 			act->achan = chan;
 			chan->flag |= ACHAN_SELECTED;
 			hilight_channel (act, chan, 1);
+			select_poseelement_by_name(chan->name, 1);
 		}
 		
 		if (conchan)

source/blender/src/editarmature.c

@@ -525,7 +525,7 @@ static int select_bonechildren_by_name (Bone *bone, char *name, int select)
 		if (select)
 			bone->flag |= BONE_SELECTED;
 		else
-			bone->flag &= ~BONE_SELECTED;
+			bone->flag &= ~(BONE_SELECTED|BONE_ACTIVE);
 		return 1;
 	}
 
@@ -537,7 +537,7 @@ static int select_bonechildren_by_name (Bone *bone, char *name, int select)
 	return 0;
 }
 
-/* called in editction.c */
+/* called in editaction.c */
 void select_bone_by_name (bArmature *arm, char *name, int select)
 {
 	Bone *bone;
@@ -721,13 +721,17 @@ static EditBone * get_nearest_editbonepoint (int findunsel, int *selmask)
 	unsigned int buffer[MAXPICKBUF];
 	unsigned int hitresult, besthitresult=BONESEL_NOSEL;
 	int i, mindep= 4;
-	short hits;
+	short hits, mval[2];
 
 	persp(PERSP_VIEW);
 
 	glInitNames();
-	hits= view3d_opengl_select(buffer, MAXPICKBUF, 0, 0, 0, 0);
-
+	
+	getmouseco_areawin(mval);
+	hits= view3d_opengl_select(buffer, MAXPICKBUF, mval[0]-5, mval[1]-5, mval[0]+5, mval[1]+5);
+	if(hits==0)
+		hits= view3d_opengl_select(buffer, MAXPICKBUF, mval[0]-12, mval[1]-12, mval[0]+12, mval[1]+12);
+		
 	/* See if there are any selected bones in this group */
 	if (hits) {
 		

source/blender/src/headerbuttons.c

@@ -934,8 +934,14 @@ void do_global_buttons(unsigned short event)
 		if (act)
 			act->id.us--;
 		ob->action=NULL;
-		
+		if(ob->pose) {		// clear flag, also used for draw colors
+			bPoseChannel *pchan;
+			for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next)
+				pchan->flag= 0;
+		}
 		BIF_undo_push("Unlink Action");
+		
+		allqueue(REDRAWVIEW3D, 0);
 		allqueue(REDRAWACTION, 0);
 		allqueue(REDRAWNLA, 0);
 		allqueue(REDRAWIPO, 0);