wedkit and encoding detection

[Nick Shaforostoff]

one feature that has gone into KDE4 khtml is heuristic encoding detection.
autodetection itself is implemented in this tiny class:
http://api.kde.org/4.0-api/kdelibs-apidocs/kdecore/html/classKEncodingDetector.html
(i also added support for autodetection to kate)

so, as html engine moves to Qt, it would be nice to also move this class  
to Qt or even to apple upstream.


any comments, suggestions, lobbying help?