CppunitTest_sw_ooxmlsdrexport: port fdo77719 to textboxes

Change-Id: I987f727ec1cd3927239a9339144274f2eea63e36
CppunitTest_sw_ooxmlsdrexport: port fdo78474 to textboxes

Change-Id: Icadf4b44377684e40334c52887883320805a8e89
DocxSdrExport::writeDMLAndVMLDrawing: fix handling of inline VML shapes

In general Writer supports having objects inside a TextFrame, Word does
not. It turns out that Word allows having certain shapes inside other
shapes, as long as they are VML-only. So do that for now: if we receive
a shape when we're already inside a shape, then just export it as VML,
not the usual drawingml+VML pair.

Also, blacklist one more VML shape type, where the shape text is already
exported inside <v:textpath>, so no dedicated <v:textbox> is needed.

Change-Id: I5786bd6827eae9756e7c179bb2ef5a5741a91878