questions about MD_SETS_SELECTED

Some of the following questions are maybe better targetted to tech-x11. I 
will email there next if I don't get answers here.

The default full distributions sets is:

#define MD_SETS_SELECTED SET_KERNEL_1, SET_SYSTEM, SET_X11, SET_MD

On some platforms:
arch/arc/md.h:#define MD_SETS_SELECTED  SET_KERNEL_1, SET_SYSTEM, 
SET_X11_NOSERVERS

Why SET_X11_NOSERVERS but I see 
/ftp/pub/NetBSD-daily/HEAD/200803210000Z/arc/binary/sets/xserver.tgz ?

arch/evbarm/md.h:#define MD_SETS_SELECTED SET_SYSTEM

Why SET_KERNEL_1?

Also why does that not list any X11, but daily builds have X11 sets for 
that.

arch/news68k/md.h:#define MD_SETS_SELECTED SET_KERNEL_1, SET_SYSTEM, 
SET_X11_NOSERVERS

Why no X server, but I see symlink to shared/m68k/xserver.tgz?

arch/newsmips/md.h:#define MD_SETS_SELECTED SET_KERNEL_1, SET_SYSTEM, 
SET_X11_NOSERVERS

Why SET_X11_NO SERVERS but I see 
/ftp/pub/NetBSD-daily/HEAD/200803210000Z/newsmips/binary/sets/xserver.tgz

arch/prep/md.h:#define MD_SETS_SELECTED SET_KERNEL_1, SET_SYSTEM, 
SET_X11_NOSERVERS

Why SET_X11_NOSERVERS as I see ../../../shared/powerpc/xserver.tgz ?

arch/sgimips/md.h:#define MD_SETS_SELECTED SET_KERNEL_1, SET_SYSTEM

Why missing SET_X11? I see 
/ftp/pub/NetBSD-daily/HEAD/200803210000Z/sgimips/binary/sets/x*tgz sets

arch/evbmips/md.h:#define MD_SETS_SELECTED      SET_SYSTEM

Why no kernel?

Why no X? I see 
/ftp/pub/NetBSD-daily/HEAD/200803210000Z/evbmips/binary/sets/x*.tgz sets

arch/cobalt/md.h:#define MD_SETS_SELECTED       SET_KERNEL_1, SET_SYSTEM, 
SET_X11_NOSERVERS

But I see 
/ftp/pub/NetBSD-daily/HEAD/200803210000Z/cobalt/binary/sets/xserver.tgz -- 
why SET_X11_NOSERVERS?

arch/ofppc/md.h:#define MD_SETS_SELECTED SET_KERNEL_1, SET_SYSTEM, SET_X11


Also is there is any use of SET_MD and if not why 
arch/ofppc/md.h has custom MD_SETS_SELECTED?

Also arch/ofppc/md.h mentions "i386". Is that leftover from copying an 
i386 file?

  Jeremy C. Reed