Patch for validation of characters in names

[David Faure]

The DOM spec (and testsuite) requires that createElement and createAttribute
(and the "NameSpace" versions of those)
check that the name is a valid name acording to the XML spec, and throw
INVALID_CHARACTER_ERR if not.

This patch (against the 3.1 branch) implements that.

For exception catching to work in kjs_binding, I also had to change
dlopening into direct linkage to ecma/*, as we did in HEAD for the same reason.

The reason for int* pException over the usual int& exception is that we
don't need to do those checks during parsing (I'm trying to keep the speed ;),
I tested that <invalid^tag> isn't parsed anyway.

I'll try to port this to CVS HEAD once I get a green light for the branch one,
but the code has changed a bit there - and Dirk and PMK don't seem to
agree on how it should be :}. It would be a good if you guys could sort this
out soon :)

-- 
David FAURE, faure at kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).
Qtella users - stability patches at http://blackie.dk/~dfaure/qtella.html
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