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: 1.2.8; 1.2.16;
fix PR 48928: build the static libX11 properly. pull in the
ximcp, xlcDef, xlcUTF8Load, xlibi18n, and xomGeneric modules
directly.

also, don't include bsd.lib.mk in the fragment parts for these
modules, but in the module build itself. otherwise, bsd.lib.mk
is included before SRCS is complete and the build strangely
seems to miss parts listed.

tested using the example in the PR.

branches: 1.1.2; 1.1.6; 1.1.42; 1.1.46;
* build and install locale modules
this fixes the problem with copy & paste not working

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."

fix PR 48928: build the static libX11 properly. pull in the
ximcp, xlcDef, xlcUTF8Load, xlibi18n, and xomGeneric modules
directly.

also, don't include bsd.lib.mk in the fragment parts for these
modules, but in the module build itself. otherwise, bsd.lib.mk
is included before SRCS is complete and the build strangely
seems to miss parts listed.

tested using the example in the PR.

branches: 1.1.2; 1.1.6; 1.1.42; 1.1.46;
* build and install locale modules
this fixes the problem with copy & paste not working

fix PR 48928: build the static libX11 properly. pull in the
ximcp, xlcDef, xlcUTF8Load, xlibi18n, and xomGeneric modules
directly.

also, don't include bsd.lib.mk in the fragment parts for these
modules, but in the module build itself. otherwise, bsd.lib.mk
is included before SRCS is complete and the build strangely
seems to miss parts listed.

tested using the example in the PR.

branches: 1.1.2; 1.1.6; 1.1.42;
* build and install locale modules
this fixes the problem with copy & paste not working