REGEX( Text ; Expression [ ; Replacement ] )

Using ICU regular expressions
http://userguide.icu-project.org/strings/regexp

Change-Id: I4cb9b8ba77cfb5b8faab93037aa0d947609383d7
Reviewed-on: https://gerrit.libreoffice.org/62332Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins