Re: port-mac68k/51783 fsck crashes with a "floating point excepton" error message.

[Chuck Silvers <chuq%chuq.com@localhost>]

this was fixed in -current by revs 1.5 and 1.6 of
src/external/gpl3/gcc/dist/gcc/config/m68k/m68k.md.

it turns out that the local patch that christos reverted there
hadn't been necessary for over a decade:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=12792

so it should be fine to apply the same change to the older version
of gcc in the netbsd 7.x tree.  that would be equivalent to
going back to rev 1.1.1.2 of m68k.md in the netbsd-7 branch.

-Chuck