Make Bruce happy: silently enter ddb on a BPT or trace trap if ddb is
configured in the kernel.
locale support broke tolower and toupper -
it appears they were swapped.
This caused (among others) XF86 and elm to barf.
Patch from Sean Vickery <seanv@cs.uq.edu.au>:

Description:
	Strftime(3) adds garabage to result string when called with "%R" in
	the format string.
Repeat-By:
	$ date +%R
	14:0202:02:08 PM
from kimmel@varese.cs.umass.edu (Matt Kimmel):
"el" driver for 3COM 3C501. This driver has some serious performance
problems and drops packets on the floor like hot potatos.
Swap also the undef macros for tolower and toupper :-).
Corrected the Makefile, it has used SRCDIR our macro for that
is CURDIR.
Corrected the syntax in the Russian.koi8-r file.
Changed a macro name from _Q to _Q2 to avoid a clash with the
newly introduced _Q macro in ctype.h.
Remove sleep(2) waiting for DTR, now sio can do it himself
o Change fake line from uucp%d to uu%d, because it produce wrong
  statistics with big pids (size of ut_line is only 8 chars)
o Make possibility to write utmp entries
Make possibility to write utmp entry for non-tty lines,
needed especially for uucpd connections
Change uucp%d lines to uu%d lines, because ut_line
overflows with big pids, produce incorrect statistics.
Now wall skips uu-lines produced by uucpd.
Skip idle info on uu-lines from uucpd
Wanted to make sure we had an explanation of the memory test stored
somewhere for reference.  Anyone who wants to is welcome to re-write this
to be a ``reall'' document, rather than just a copy of DavidG's message.
Remove unneded irq/drq/vector from snd?
More EXCLUDE_ options added,
unneded irq/drq/vector removed
Fix arguments of CONS_GETINFO
Don't queue, deliver according to sendmail config.
added locale to Makefile for /usr/src/share
added MAN1+= vi.1, and link to nvi.1
added rcs id.