* sysdeps/unix/sysv/linux/syscalls.list: Add tee syscall.
* sysdeps/unix/sysv/linux/Versions: Export tee@GLIBC_2.5.
* sysdeps/unix/sysv/linux/sparc/bits/fcntl.h: Add prototype for tee.
* sysdeps/unix/sysv/linux/ia64/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/sh/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/i386/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/s390/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h: Likewise.