[CIFS] Add mount option for disabling sending byte range lock requests

over the wire (to help the case when applications break with cifs mandatory
lock behavior.  Add part one of mount option for requesting case
insensitive path name matching.

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

diff --cc fs/cifs/CHANGES
Simple merge

diff --cc fs/cifs/README
Simple merge

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

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

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

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

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