I have added a snapshot of the current cifs client development tree
(bk://cifs.bkbits.net/linux-2.5cifs) in svn

svnanon.samba.org/home/svn/linux-cifs-client/branches/linux-2.6bk

For current 2.6 linux kernels the files can replace the ones in 2.6
kernel fs/cifs directory and are an alternative to downloading most
current cifs code via bitkeeper or waiting for the next linux-2.6-mm
tree to be posted to kernel.org (the cifs changesets in the cifs bk
development tree, that are waiting to go in the official kernel tree,
already were included in the linux-2.6-mm patches automatically). The
files in this svn directory depend on some kernel functions that have
been created/renamed since 2.6.6 so would probably require some minor
patching to build on 2.6.6 or earlier.