webdav.Resource.dav__simpleifhandler.  If the resource is not
        locked, and a DAV request contains an If header, no token can
        possibly match and we must return a 412 Precondition Failed
        instead of 204 No Content.

        in webdav.Resource.dav__simpleifhandler.  If the resource is
        locked at all, and a DAV request contains an If header, and
        none of the lock tokens present in the header match a lock on
        the resource, we need to return a 423 Locked instead of 204 No
        Content.

        because we returned "412 Precondition Failed" instead of "423
        Locked" when the resource attempting to be moved was itself
        locked.  Fixed by changing Resource.Resource.MOVE to raise the
        correct error.

the wrong thing.

propwformed were failing because Zope did not strip off the
xmlns: attribute attached to XML property values.  We now strip
off all attributes that look like xmlns declarations.

resource hasn't been locked with, we should return an error
instead of a 20X response.  See
http://lists.w3.org/Archives/Public/w3c-dist-auth/2001JanMar/0099.html
for rationale.

Prior to Zope 2.11, we returned a 204 under this circumstance.
We choose do what mod_dav does, which is return a '400 Bad
Request' error.

This was caught by litmus locks.notowner_lock test #10.

of litmus version 10.5 (http://www.webdav.org/neon/litmus/)
expose a bug in Zope propertysheet access via DAV.  If a
proppatch command sets a property with a null xmlns,
e.g. with a PROPPATCH body like:

<?xml version="1.0" encoding="utf-8" ?>
<propertyupdate xmlns="DAV:">
<set>
<prop>
 <nonamespace xmlns="">randomvalue</nonamespace>
</prop>
</set>
</propertyupdate>

When we set properties in the null namespace, Zope turns
around and creates (or finds) a propertysheet with the
xml_namespace of None and sets the value on it.  The
response to a subsequent PROPFIND for the resource will fail
because the XML generated by dav__propstat included a bogus
namespace declaration (xmlns="None").

Fixed by amending OFS.PropertySheets.dav__propstat.

as its own project, egg).

Merged from 2.10 branch - Collector #2320: HTTPResponse setHeader lowercased keys but getHeader did not, causing lookups of 'Content-Type' to fail

Support for using zopectl on Windows has been added. All commands are supported and there are two Windows specific ones: install and remove, which install or remove the Windows service. The start, stop and restart commands handle the Windows service.

Fix DateIndex date display; unpack stored integers into something meaningful. This fixes Collector #2316.

Fix potential bug in requestmethod where you cannot specify None for a keyword argument where None is not the default

http://www.zope.org/Collectors/Zope/2308.

Collector #2300: delimit *all* headers with CRLF; accumulated_headers and appendHeader use \n for delimeters and never get corrected on output

headers of plain html files served from Zope3 resource directories.

Also cleanup whitespace in CHANGES.txt.