return types, 64-bit changes: ioctl cmd -> u_long, casts, etc.

return types, 64-bit changes: ioctl cmd -> u_long, casts, etc.

SCCS-vsn: sys/kern/subr_log.c 8.2
SCCS-vsn: sys/kern/tty_tb.c 8.2
SCCS-vsn: sys/kern/tty.c 8.13
SCCS-vsn: sys/kern/kern_sig.c 8.12
SCCS-vsn: sys/kern/tty_pty.c 8.3
SCCS-vsn: sys/kern/kern_resource.c 8.7
SCCS-vsn: sys/kern/sys_socket.c 8.2
SCCS-vsn: sys/kern/vfs_bio.c 8.11
SCCS-vsn: sys/kern/uipc_usrreq.c 8.6
SCCS-vsn: sys/kern/kern_prot.c 8.8
SCCS-vsn: sys/kern/uipc_mbuf.c 8.3
SCCS-vsn: sys/kern/kern_proc.c 8.6
SCCS-vsn: sys/kern/tty_tty.c 8.3
SCCS-vsn: sys/kern/tty_compat.c 8.2
SCCS-vsn: sys/kern/vfs_subr.c 8.14
SCCS-vsn: sys/kern/tty_conf.c 8.5
SCCS-vsn: sys/kern/vfs_vnops.c 8.6