Fix a problem when neon send the token list for
methods modifying a WebDAV resource.

The problem showed up when working whith Sharepoint 2013.
Other WebDAV servers seem unaffected by it.

The If Request Header is currently formed in neon using the
"Tagged-List" format, while Sharepoint 2013 only accepts the
"No-Tag-List" format.

References:
section 7.5 of RFC4918:
http://tools.ietf.org/html/rfc4918#section-7.5

section 10.4 of RFC4918:
http://tools.ietf.org/html/rfc4918#section-10.4

Change-Id: I24d607fde251f1846f0e7b630b627b1500da18ea
Reviewed-on: https://gerrit.libreoffice.org/17423Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jan Holesovsky <kendy@collabora.com>