[CSS21] percentage table row heights

http://lists.w3.org/Archives/Public/public-css-testsuite/2008Jun/0014.html
   # Percentage heights on table cells, table rows, and table row
   # groups compute to 'auto'.

Robin Pelgrim posted a testcase that shows several browsers
do not treat percentage row heights as 'auto'.

   http://lists.w3.org/Archives/Public/public-css-testsuite/2008Jun/0014.html
   http://lists.w3.org/Archives/Public/www-archive/2008Jun/att-0146/table-row-percent-height.html

I've tested Opera 9.27, Firefox 3, and Konqueror 3.5.9 so far,
all of them try to honor the percentage somehow.

Should percentages on row heights be undefined in CSS2.1
instead of treated as 'auto'?

~fantasai