+ fix again and keep references to other sheets during sort (fdo#79441) [Eike Rathke]
    + related: identify places where -1 was cast to 0xFFFF in the past (fdo#80571) [Caolán McNamara]
    + add a hidden configuration option to toggle ref update on sort. (fdo#81633) [Kohei Yoshida]
    + do not clear the 3D flag on refupdate (fdo#82936) [Eike Rathke]
    + do not update references in SortReorderByColumn() if disabled (fdo#83765) [Eike Rathke]
    + don't create duplicate Mirrored[X|Y] properties (fdo#84043) [Caolán McNamara]
    + don't adjust references wrt cell position when disabled. (fdo#85215) [Kohei Yoshida]
    + correct adjustment of range reference on delete & shift. (fdo#85282) [Kohei Yoshida]
    + CVE-2014-9093 backport rtf fixes (fdo#86449) [Caolán McNamara]
    + CVE-2014-9093 backport rtf fixes (fdo#86451) [Caolán McNamara]
    + paint after Undo of Sort (fdo#86708) [Eike Rathke]
    + related: identify places where -1 was cast to 0xFFFF in the past (i#17171) [Caolán McNamara]