clientgen.c: Added cli_mv() (used in a recent torture test).

clientgen.c: Added cli_mv() (used in a recent torture test).
reply.c: Changed reply_open_and_X to split out the oplock
request bits from core and extended and if an oplock was granted only set
the corresponding bit on reply.
server.c: Added code to dynamically allocate i/o buffers in oplock_break
(prevents recursion problems) , also made reset of sent_oplock_break
explicit.
Jeremy.
(This used to be commit 16e55ee2b8be9a4210d8cf87691cdf42373759d2)