patch for KFileDialog silliness

[Rob Bayer]

> - don't use tabs

Will do.  Not sure when my MSVC reverted back to tabs... seems to
happen every time I re-run cmake.  Argh.

> - make sure to use the correct QString::replace() - converted.replace("\\/","\\") isn't optimal
>

What would you suggest?  AFAIK there is no QString::replace(QString,
QChar), so I can't do replace("\\/",'/') and replace("\\/","/") still
seems like it should be faster than the previous for loop
implementation.

Rob