o Wave goodbye to INSTALL_SMALL-based boot image (it was originally
built for 5.25" media, but isn't anymore).
o Make a separate ramdisk image for the INSTALL_TINY image,
using the old script-based installer (not fixed/checked at the moment).
However, at least tweak the profile scripts to start it instead of sysinst.
Also remove ping6 and rtsol from ramdisk compared to original; the
INSTALL_TINY image doesn't have INET6.
o Add dump/restore back into both ramdisk images.
o Add scsictl and chio to the normal ramdisk image (INSTALL-based fdset)
o With dump/restore reinstated, remove the rescue-* and ramdisk-rescue
directories.
So, we're now back to having the recovery tools on the same image as
the boot media images.
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