Fixes all these test case scenarios:
1. in A1 enter =1E222
   * move cell cursor back onto A1
   * status bar displays Sum=100000... repeated until
     filled (or 222 '0' characters)
2. invoke number format dialog on A1
   * for General format 100000... is displayed in the preview
3. move cell cursor to A2
   * open Function Wizard (Ctrl+F2)
   * choose (double click) ABS function
   * enter A1 as parameter
   * see 100000... displayed as Function result and Result
4. save as .ods
   * in content.xml see display text of A1 being saved as 100000...

Change-Id: I7c22c0461a6783c85c1d51c31e8607fb2edb821c
(cherry picked from commit ef0a2683)
Reviewed-on: https://gerrit.libreoffice.org/18924Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit 746359e4)