#15 patch dom.tcl to work with tdom 0.8.0

[Jeff Davis]

I am not 100% sure what the semantics of the
dom::document createElement is supposed to be for a doc
versus node
and it seems difficult in tdom to tell which is which
(other than
to do the catch which is what I did here).

not included in the patch was the change to pkgIndex.tcl
(add
package ifneeded SOAP::dom 1.0 [list source [file join
$dir dom.tcl]]
)