* cygserver.h (client_request::request_code_t): Add

	* cygserver.h (client_request::request_code_t): Add
	CYGSERVER_REQUEST_MSG and CYGSERVER_REQUEST_SEM.
	(admininstrator_group_sid): Add extern declaration.
	* cygserver_ipc.h: Rewrite.
	* cygserver_msg.h: New file.
	* cygserver_sem.h: New file.
	* cygserver_shm.h: More or less rewrite.
	* cygwin.din: Add msgctl, msgget, msgrcv, msgsnd, semctl, semget and
	semop.
	* msg.cc: Rewrite.
	* safe_memory.h: Remove.
	* sem.cc: Rewrite.
	* shm.cc: Rewrite.
	* include/cygwin/ipc.h: Use appropriate guard.
	(struct ipc_perm): Add seq.
	(IPCID_TO_IX): New define from BSD.
	(IPCID_TO_SEQ): Ditto.
	(IXSEQ_TO_IPCID): Ditto.
	(IPC_R): Ditto.
	(IPC_W): Ditto.
	(IPC_M): Ditto.
	* include/cygwin/msg.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(msgqnum_t): Define unsigned.
	(msglen_t): Ditto.
	(struct msqid_ds): Add msg_first and msg_last.
	(struct msginfo): Remove msgpool. Add msgssz and msgseg.
	* include/cygwin/sem.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(SEM_UNDO): Define appropriately.
	(struct semid_ds): Add sem_base.
	(struct seminfo): Add semmap and semusz.
	(SEM_A): New define from BSD.
	(SEM_R): Ditto.
	(SEM_ALLOC): Ditto.
	(union semun): Define.
	* include/cygwin/shm.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(SHMLBA): Define using cygwin_internal(CW_GET_SHMLBA) call.
	(struct shmid_ds): Add shm_internal.
	(struct shm_info): Rename shm_ids to used_ids as in BSD.  Add define
	for shm_ids.
	* include/cygwin/sysproto.h: New file.
	* include/cygwin/version.h: Bump API minor number.
	* include/sys/ipc.h: New file.
	* include/sys/msg.h: New file.
	* include/sys/queue.h: New file from BSD.
	* include/sys/sem.h: New file.
	* include/sys/shm.h: New file.
	* include/sys/sysproto.h: New file.