I've done a cleanup of ipcs(1) so that it doesn't require defining
_KERNEL before including a bunch of system files.  To achieve this,
I've exposed the following names to userland:

	<sys/ipc.h>
		_IXSEQ_TO_IPCID

	<sys/msg.h>
		struct msginfo { }

	<sys/sem.h>
		struct seminfo { }
		_SEM_ALLOC
		_SEM_DEST
		SEM_CONFIG_FREEZE
		SEM_CONFIG_THAW

	<sys/shm.h>
		struct shminfo { }

SEM_CONFIG_FREEZE and SEM_CONFIG_THAW are arguments to the semconfig()
system call so I haven't prefixed them with underscores.  Are these
changes acceptable from a namespace polution POV?

Simon.