Standard "cvs add" never does any recursion. With standard
cvs, "cvs add dir" will either add just the "dir" to
the repository, or error out. Prior to this change, git-cvsserver
would try to recurse (perhaps re-adding sandbox-removed files?) into
the existing directory instead.
Signed-off-by: Matthew Ogilvie <mmogilvi_git@miniinfo.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>