Writer core doesn't support this, and this has been a problem for table
cells as well. There the workaround we're using for quite a while is to
do the rotation at a text portion level instead, which results in
reasonable layout for simple cases. Do the same here.

One additional complexity is that the API between oox and writerfilter
is a single UNO shape, we get this property in oox, and we have to
handle it in writerfilter, when the text frame is already attached to
some text. Kill this problem by adding a FrameInteropGrabBag for sw text
frames: it's useful anyway, and then we can pass around this property
inside the grab bag.

Change-Id: Idb5ec83b5cbdde8f29d15b2cebfad24226bb6507