Cleanup: convert gforge task ID's to phabricator format

Cleanup old tracker task format to the new. e.g: [#34039] to T34039

Ref D8718

source/blender/blenkernel/intern/constraint.c

@@ -5396,7 +5396,7 @@ bool BKE_constraint_remove_ex(ListBase *list, Object *ob, bConstraint *con, bool
 {
   const short type = con->type;
   if (BKE_constraint_remove(list, con)) {
-    /* ITASC needs to be rebuilt once a constraint is removed [#26920] */
+    /* ITASC needs to be rebuilt once a constraint is removed T26920. */
     if (clear_dep && ELEM(type, CONSTRAINT_TYPE_KINEMATIC, CONSTRAINT_TYPE_SPLINEIK)) {
       BIK_clear_data(ob->pose);
     }