sw: drawingml export of text frame btLr text direction

CppunitTest_sw_ooxmlexport's testFdo69636 is a reproducer for this problem.

Change-Id: Ibfd2f9388c22436d5677380a22184a2970b8e7be
CppunitTest_sw_ooxmlexport: register wps, wp and a namespaces

This are all required to be able to assert the drawingML equivalent of
VML XPath expressions.

Change-Id: I79460d6ae7448120f8b9c27acdba52d33ff52a5a