CppunitTest_sw_ooxmlsdrexport: port testLineStyle_DashType_VML to textboxes

Change-Id: Idb4807a58b6008afeb3e26d03b699671c0b88f7c
CppunitTest_sw_ooxmlsdrexport: port testMSwordHang to textboxes

Change-Id: Ia13c3d5657c32b89e200ede572d4615b833374de