#4 -final 0 and error handling

[Mats Bengtsson]

1) -final 0 fixes. This option is currently broken,
and works only in certain circumstances.

2) fixed list structures and error messages for
essentially all error callbacks. They had wrong list
structure and no one word error messages.

The new sources (incomplete distro) is found at

http://hem.fyristorg.com/matben/download/TclXML.tar.gz

Mats Bengtsson