bsd.own.mk: rename GCC_NO_* to CC_WNO_*

Rename compiler-warning-disable variables from
GCC_NO_warning
to
CC_WNO_warning
where warning is the full warning name as used by the compiler.

GCC_NO_IMPLICIT_FALLTHRU is CC_WNO_IMPLICIT_FALLTHROUGH

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

introduce some common variables for use in GCC warning disables:

GCC_NO_FORMAT_TRUNCATION -Wno-format-truncation (GCC 7/8)
GCC_NO_STRINGOP_TRUNCATION -Wno-stringop-truncation (GCC 8)
GCC_NO_STRINGOP_OVERFLOW -Wno-stringop-overflow (GCC 8)
GCC_NO_CAST_FUNCTION_TYPE -Wno-cast-function-type (GCC 8)

use these to turn off warnings for most GCC-8 complaints. many
of these are false positives, most of the real bugs are already
commited, or are yet to come.


we plan to introduce versions of (some?) of these that use the
"-Wno-error=" form, which still displays the warnings but does
not make it an error, and all of the above will be re-considered
as either being "fix me" (warning still displayed) or "warning
is wrong."

branches: 1.7.46;
Enable WARNS=4 by default, except for:
cpuctl dumplfs hprop ipf iprop-log kadmin kcm kdc kdigest
kimpersonate kstash ktutil makefs ndbootd ntp pppd quot
racoon racoonctl rtadvd sntp sup tcpdchk tcpdmatch tcpdump
traceroute traceroute6 user veriexecgen wsmoused zic
(Mostly third-party applications)

Convert more MACHINE tests to MACHINE_ARCH

branches: 1.5.28;
- KNF
- Fix mmap call arguments and return value.
- Sprinkle const

only build ipwctl on i386; it is not much use elsewhere

Move ipw(4) from usr.sbin/ipwctl to share/man/man4.

NetBSD RCSID & style tweaks

branches: 1.1.1;
Initial revision

Move ipw(4) from usr.sbin/ipwctl to share/man/man4.

New sentence, new line; remove (R) after Intel.

Drop trailing whitespace.

NetBSD RCSID & style tweaks

branches: 1.1.1;
Initial revision

Merge riastradh-drm2 to HEAD.

Use Mt for email addresses.

branches: 1.12.2; 1.12.4;
Use Lk macro when dealing with URLs. While here update or remove some
dead URL links. Another part of PR/29238.

branches: 1.11.6;
Fix preamble to match order set out by mdoc(7). Discussed with wiz.

branches: 1.10.28;
Remove -k. Should no longer be needed.

ipwctl is no longer used to load the firmware.

Document where to get firmware binaries (pkgsrc!)

branches: 1.7.2;
Refer to the pkgsrc/sysutils/ipw-firmware package.

Fix description of firmware. From Damien Bergamini.

Document where to get the firmware from, and the differences between
the firmware files.

New sentence, new line; remove explanations from synopsis;
remove (R) after Intel; style improvement.

Drop trailing whitespace.

NetBSD RCSID & style tweaks

branches: 1.1.1;
Initial revision

Fix typo.

convert __attribute__s to applicable cdefs.h macros

branches: 1.8.10;
Remove the SIOCSKILLFW define. It's not used anymore.

Remove -k. Should no longer be needed.

ipwctl is no longer used to load the firmware.

- KNF
- Fix mmap call arguments and return value.
- Sprinkle const

Improve statistics display. Consistency tweaks. From Damien Bergamini.

tweak usage

NetBSD RCSID & style tweaks

branches: 1.1.1;
Initial revision