Related: #i125293# Further corrections for CssStyle handling in SVG importer

(cherry picked from commit f00d6d2ea3e73e687edb1da4c32c0960eaf5010b)

Conflicts:
	svgio/source/svgreader/svgnode.cxx
	svgio/source/svgreader/svgstyleattributes.cxx
	svgio/source/svgreader/svgstylenode.cxx
	svgio/source/svgreader/svgsvgnode.cxx

Change-Id: I335b292fcdf1ebac925c9fd76ad624efb923447d
drop rtl:: and statics

Change-Id: I6108efad77cf1c21dea3826ae149f3750552b0ed