With this, <w:ind w:hanging="..."/> as direct paragraph formatting and
<w:ind w:left="..." w:hanging="..."/> as a numbering level formatting is
properly merged, i.e. w:left is not lost, defaulting to 0.

(cherry picked from commit 56341e5d)

Conflicts:
	sw/qa/extras/ooxmlimport/ooxmlimport.cxx

Change-Id: If5534fbd9ee6d41139b0ed3a3df9d0cc5aad3239
Reviewed-on: https://gerrit.libreoffice.org/18906Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>