Thanks to Alexis Deveria. (Though I did fix one small bug.)
My patch-file is now down to a mere 178 lines (a big
chunk of which is Revision 569).
Also, the font-size for foreignObjects defaults to 16pt,
which will be more useful in Instiki.
Added support so that you can
create new foreignObjects, manipulate
existing ones, and edit their content.
No itex support. You need to use MathML
in there. But it's a start ...
