Seems to date from:
   commit c631cf94
   Author: John LeMoyne Castle <jlc@mail2lee.com>
   Date:   Tue Dec 21 15:47:53 2010 +0000
   68bit currency enhancement

Change-Id: I81863991ec3717ea213dffb535283e6fc8abceb7
Reviewed-on: https://gerrit.libreoffice.org/38693Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>