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: 1.6.98;
Use SCRIPTS=unifdefall.sh instead of SCRIPTS=unifdefall,
as the latter causes the .sh: rule in <sys.mk> to be used, which
leaves unifdefall in the .OBJDIR unless a CLEANFILES rule is added.

unifdefall is available.

ANSI C support, from http://dotat.at/prog/misc/
PR 22303

Merged with 4.4lite.
Changed to conform to NetBSD's new RCS ID convention.

Add RCS identifiers.

branches: 1.1.1;
Initial revision

- we don't need stdbool.h anymore.
- the previous fix for the negative index logic was wrong, fix it.

forgot to add

Remove workaround for ancient HTML generation code.

Add -o output option, which can be used to specify an output file. The
file can even be the same as the input file. Idea from IRIX unifdef(1).

Sort sections and other fixes.

Remove space that broke page. From Nicolas Joly in PR 23082.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

ANSI C support, from http://dotat.at/prog/misc/
PR 22303

Sort sections.

More and more .Os cleanups. .Os is defined in the tmac.doc-common file,
so we shouldn't override it with versions in the manpages. Many more to
come.

WARNSify, fix .Nm usage, KNFify

Merged with 4.4lite.
Changed to conform to NetBSD's new RCS ID convention.

add semicolon as suggested by Mark Weaver.

Add RCS indentifiers.

branches: 1.1.1;
Initial revision

PR/47068: unifdef(1) with cpp directive on last line without newline
Remove bogus test; if there is no newline, the state does not change.

branches: 1.21.2;
Pointer differences are generally not integers, so use %td here.

branches: 1.20.2; 1.20.4;
Use __dead

- Fix an incorrect comparison (always true)
This created an unnecessary temporary file when using the -o option
to create a new file.

- Fix -o option bug reported by Tony Finch
The output file was incorrectly called "[stdin]" when overwriting
the the input file via standard in (unifdef -o file < file).

branches: 1.18.2;
fix language

- Fix bug where -o outfile fails when outfile does not exist. Pointed
out by Tony Finch.

- we don't need stdbool.h anymore.
- the previous fix for the negative index logic was wrong, fix it.

Rename internal getline() function to get_line() so it does
conflict with the soon to be added getline(3) libc function.

Add -o output option, which can be used to specify an output file. The
file can even be the same as the input file. Idea from IRIX unifdef(1).

Coverity CID 1206: Confusion between && and || leads to indexing an array
with negative index.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

ANSI C support, from http://dotat.at/prog/misc/
PR 22303

another fix against unreadable indentation

fix unreadable indentation

Make gcc 2.96 (and maybe earlier) happier. Include <stdlib.h>,<string.>,
etc. as appropriate to get exit,srncmp,abs,abort,etc.
Add -I${.CURDIR} to a few Makefiles

char -> unsigned char

Didn't get along with ObjC/C++ style "//" comments. Add code to deal with that.

WARNSify, fix .Nm usage, KNFify

gcc -Wall cleanup by jimj and myself

Merged with 4.4lite.
Changed to conform to NetBSD's new RCS ID convention.

Add RCS identifiers.

branches: 1.1.1;
Initial revision

ANSI C support, from http://dotat.at/prog/misc/
PR 22303