* sysdeps/generic/fdatasync.c: New file. Default implementation
simply uses fsync.
* sysdeps/generic/netinit/in.h: Moved to here from inet/netinet/in.h.
* sysdeps/generic/schedbits.h: New file. System dependent
defintion for POSIX.4 scheduling interface.
* sysdeps/generic/sys/socket.h: Moved to here from socket/sys/socket.h.
* sysdeps/stub/nanosleep.c, sysdeps/stub/sched_getp.c,
sysdeps/stub/sched_gets.c, sysdeps/stub/sched_primax.c,
sysdeps/stub/sched_primin.c, sysdeps/stub/sched_rr_gi.c,
sysdeps/stub/sched_setp.c, sysdeps/stub/sched_sets.c,
sysdeps/stub/sched_yield.c: New file: Stub implementation
for systems missing these POSIX.4 system calls.
* sysdeps/unix/sysv/linux/gnu/types.h,
sysdeps/unix/sysv/linux/ioctls.h: Use kernel header for
data type definitions.
* sysdeps/unix/sysv/linux/netinet/in.h: New file. Linux
specific version.
* sysdeps/unix/sysv/linux/posix_opt.h: New file. Define POSIX
options applicable for Linux.
* sysdeps/unix/sysv/linux/syscalls.list: Add definitions for
fdatasync, nanosleep, sched_setparam, sched_getparam,
sched_setscheduler, sched_getscheduler, sched_yield,
sched_get_priority_max, sched_get_priority_min, and
sched_rr_get_interval.
* sysdeps/unix/sysv/linux/sysconf.c: Add handling of POSIX.4
options.
* sysdeps/unix/sysv/linux/termbits.h: Use kernel headers.
* time/sys/time.h: Remove definition of `struct timespec'.
* time/time.h (struct timespec): Move definition to here.
variable, LUCKY, to use instead of setting D to -1 (which fouls