Use location-list instead of quickfix list

[Trevoke]

From vim help:

                    *location-list* *E776*
A location list is similar to a quickfix list and contains a list of positions
in files.  A location list is associated with a window and each window can
have a separate location list.  A location list can be associated with only
one window.  The location list is independent of the quickfix list.

This could be very handy when doing complex refactorings