Problem Description:
- Matrix multiplication cell formula range is not exported after roundtrip.

XML Difference:
Original : <f t="array" ref="G5:G6">MMULT(A1:C2,E1:E3)</f>

Roundtrip : <f aca="false">MMULT(A1:C2,E1:E3)</f>

Solution : Added formula cell range support for matrix multiplication.

Reviewed-on: https://gerrit.libreoffice.org/16033Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>
(cherry picked from commit beb8e283)

Conflicts:
	sc/qa/unit/subsequent_export-test.cxx

fix 176 unbalanced XML_f xlsx export failuires

regression from

commit beb8e283
Author: yogesh.bharate001 <yogesh.bharate@synerzip.com>
Date:   Tue Jun 2 16:39:09 2015 +0530

    tdf#61908:XLSX formula cell range is not exported for MMULT.

(cherry picked from commit 103b6194)

array formulas do not consist only of multiple rows, tdf#61908 follow-up

For example, {={1,2}*3} is a two columns one row vector, or even a
single cell could hold an array formula.

(cherry picked from commit 92df7db8)

a54ce5ce437e592378fe930b779c518de9670995
14a44ac8356fdffc98b7097f48319755f5f2f317

do not write MM_REFERENCE formulas to OOXML, tdf#61908 follow-up

The array range is covered by MM_FORMULA.
Excel even complained when loading such a document.

(cherry picked from commit f501fe4d)

Change-Id: Ic871f064a98a324bc16a4253b633c97417c3f900
10e1b19fbfb8ea849ffe3d46504fdf3389633c5f
Reviewed-on: https://gerrit.libreoffice.org/18592Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>