dxf → labeling Relation

File in src/core/dxf	Includes file in src/core/labeling
qgsdxfexport.cpp	qgstextlabelfeature.h
qgsdxfexport.h	qgslabelsink.h
qgsdxfexport_p.h	qgslabelsink.h
qgsdxfexport_p.h	qgsvectorlayerlabeling.h