wxPathList changes broke tex2rtf with relative paths

[ABX]

Hi (Francesco)!

After patch:
http://cvs.wxwidgets.org/viewcvs.cgi/wxWidgets/src/common/filefn.cpp.diff?r1=1.270&r2=1.271
broke using tex2rtf with relative paths. Previously my tex2rtf command looked
like:

tex2rtf.exe ..\wxW\docs\latex\wx\manual.tex manual.html -html -twice

and relative paths worked perfectly here. Now they don't because of the
argument passed to fn.Normalize(...). Going back to default arguments in call
fn.Normalize() makes tex2rtf working fine.

I don't want to just reverse that patch because there is probably some
argumentation behind the change but I don't see much in patch tracker.

ABX