* sysdeps/unix/bsd/hp: Directory and all files removed.
These are now in the ports repository.
* sysdeps/unix/bsd/osf: Likewise.
* sysdeps/unix/bsd/sequent: Likewise.
* sysdeps/unix/bsd/sony: Likewise.
* sysdeps/unix/bsd/ultrix4: Likewise.
* sysdeps/unix/sysv/aix: Likewise.
* sysdeps/unix/sysv/hpux: Likewise.
* sysdeps/unix/sysv/irix4: Likewise.
* sysdeps/unix/sysv/isc2.2: Likewise.
* sysdeps/unix/sysv/minix: Likewise.
* sysdeps/unix/sysv/sco3.2.4: Likewise.
* sysdeps/unix/sysv/sco3.2: Likewise.
* sysdeps/unix/sysv/sysv4: Likewise.