Bugfix #6486

Posemode: you can get a situation of an active object, in posemode, which
is not selected. That is very invisible, and gives issues for tools like
'clear rotation', because it checks for selected objects.

Als fixed clear (alt+g,r,s) options to only work on posemode for the active
object.

source/blender/src/editobject.c

@@ -999,7 +999,7 @@ void clear_object(char mode)
 		if TESTBASELIB(base) {
 			ob= base->object;
 			
-			if(ob->flag & OB_POSEMODE) {
+			if( (ob->flag & OB_POSEMODE) && ob==OBACT) {
 				clear_armature(ob, mode);
 				armature_clear= 1;	/* silly system to prevent another dag update, so no action applied */
 			}