While converting libgtop to use SPECIAL_PERMS, too much of the
previous patch to the configure script was removed, breaking DragonFly.
Restored the missing bits to unbreak DragonFly.
doing the "right" thing (which it might not anyway because it does not check
error conditions).
Also set the package as 'user-destdir' because we don't need to do the install
as root any more.
Suggested by joerg@.
destdir enabled (now the default)! To do this, remove the logic from
our custom Makefile and make the logic shipped by the package do its
thing (which is smarter than us in this cse).
This lets libgtop work again, which in turn fixes stuff like the GNOME
system monitor or bug-buddy.
Bump PKGREVISION.
