[CIFS] Add support for legacy servers part nine. statfs (df and du) is now

functional, and the length check is fixed so readdir does not throw a
warning message when windows me messes up the response to FindFirst
of an empty dir (with only . and ..).

Signed-off-by: Steve French (sfrench@us.ibm.com)

diff --cc fs/cifs/CHANGES
Simple merge

diff --cc fs/cifs/cifsfs.c
Simple merge

diff --cc fs/cifs/cifspdu.h
Simple merge

diff --cc fs/cifs/cifsproto.h
Simple merge

diff --cc fs/cifs/cifssmb.c
Simple merge

diff --cc fs/cifs/misc.c
Simple merge

diff --cc fs/cifs/netmisc.c
Simple merge