websrv_lib: add quirk for Darwin 9.x.x webdav clients.
websrv_lib: add quirk for Darwin 9.x.x webdav clients.

They will report "HTTP/1.0" to us, while they support (and need) the
authorisation features of HTTP/1.1 .

This makes WebDAV work for some Mac OSX versions.

xrg/openerp-server,xrg/openerp-server