Generalized unique_editbone_name to be useable if a name change after the bone has been added to the list (this could probably simplify some code in editarmature, I haven't done that yet).

First pass for retargetting template's renaming magic. For now, in new retargetted bone's name: %S (side) and %N (number) will be replaced by user defined strings.

Will need to experiment on how useful that is and how it could be better.

source/blender/python/api2_2x/Armature.c

@@ -280,7 +280,7 @@ static int BonesDict_SetItem(BPy_BonesDict *self, PyObject *key, PyObject *value
 		//create a new editbone
 		editbone = MEM_callocN(sizeof(EditBone), "eBone");
 		BLI_strncpy(editbone->name, key_str, 32);
-		unique_editbone_name(NULL, editbone->name);
+		unique_editbone_name(NULL, editbone->name, NULL);
 		editbone->dist = ((BPy_EditBone*)value)->dist;
 		editbone->ease1 = ((BPy_EditBone*)value)->ease1;
 		editbone->ease2 = ((BPy_EditBone*)value)->ease2;

source/blender/python/api2_2x/Bone.c

@@ -832,7 +832,7 @@ static PyObject *EditBone_new(PyTypeObject *type, PyObject *args, PyObject *kwds
 	//otherwise this will act as a py_object
 	py_editBone->editbone = NULL;
 
-	unique_editbone_name(NULL, name);
+	unique_editbone_name(NULL, name, NULL);
 	BLI_strncpy(py_editBone->name, name, 32);
 	py_editBone->parent = NULL;
 	py_editBone->weight= 1.0f;