Reviewed by Eric & Oliver. Leak related fixes reviewed by Mark.

Finally make the SVG <use> implementation use the proper "shadow tree" concept,
which is also used by the HTML forms implementation. It's the first time in ksvg
history that <use> is not implement as a crude hack, but proper & sane.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@19254 268f45cc-cd09-0410-ab3c-d52691b4dbfc
58 files changed