- better regular expressions to check hostnames and domain specs
- added underscore as allowed character in hostnames (this is officially
  forbidden by RFC 972 but underscores are often used and supported
  by some DNS servers).

to override.

pos() is disabled because the behaviour of the other
splitters differ from the sematics of the funciton.

Don't test for explicit end-of-line markers, since they vary across
platforms.  Instead, strip() the line read and test for the actual content.

standalone but not through DTML. Fixed !

unspecified defaults for other positions (curiously, which should
fail with Python -- evidently I dont fully grok something [MTK]);
should enable C acclerated access control to work again.

lack of keyword argument support.  :(

from cAccessControl-review-branch.

      - WebDAV: '(' and ')' are now allowed in Ids for Zope objects.
        This is needed when one tries to duplicate files using cut&paste
        through Microsoft webfolders.

raise an error on duplicat removal due to recursive entry.

internal dav__* functions in PropertySheets.py although they
are considered to be safe and do not need any escaping. This
caused Zope to be completely incomplete with Windows XP. Fixed !

 - TAL now cononicalizes singleton attributes, so expected output must
   follow suit.

than what BaseStorage provides.