[Zope] evaltag in newer zopes

[magnus/Websys@websys.no]

Some of our users/developers (the difference tends to be blurred when you're 
using Zope) used and liked the <dtml-eval> tag in older zopes.  I've just 
upgraded to the newest and bestest, but hestitate to install evaltag.  The 
evaltag package / patch includes a fix for dtml-comment so you can have 
malformed dtml code inside it.  I think this was was put in the standard code 
a couple of releases back, so I'm afraid that the patch won't install cleanly.

-Magnus