The need for this is ooxml: we need to have a duplicate entry (rPr)
like this:
<p>
  <pPr>
     <rPr>...</rPr>
  </pPr>
  <r>
     <rPr>...</rPR>
  </r>
</p>
This patch allows to do that by setting aside a copy of the <rPr> line,
and then merging the copy when needed.

Change-Id: I3868a822aa9e5210f3d814c68398a38f95072cd5
Reviewed-on: https://gerrit.libreoffice.org/1648Reviewed-by: Noel Power <noel.power@suse.com>
Tested-by: Noel Power <noel.power@suse.com>