tools: binstall can use posix_spawn() instead of vfork()

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.

install(1): copy metachar table from usr.bin/make

It is not worth having a dependency on usr.bin/make just for including
this small table. The header file usr.bin/make/make.h, which is
included for consistency with the rest of the usr.bin/make code, is
using inline functions a lot and refers to several parts of make that
are completely irrelevant to usr.bin/install.

xinstall: define MAKE_NATIVE so our make parts compile

apply GCC_NO_ADDR_OF_PACKED_MEMBER

Don't assume HAVE_POSIX_SPAWN when building a host prog. From Joachim
Kuebart in PR 50301. needs pullup-7

Use the bourne shell if the after command has shell metachars.

- improve error printing
- deduplicate run functions and don't use the shell so that we handle
filenames with spaces and metacharacters consistently.

Add optional support for posix_spawn (instead of vfork) and enable it for
the in-tree build.

document non-literal format strings

Don't depend on lubutil if we're building host tools. Fix tools build on
non-NetBSD hosts.

Complete the move of string_to_flags() and flags_to_string() from the
bin/ls sources to libutil:
o Bump libutil minor version number
o Fix uses to include <util.h> to pick up the function definitions
o Fix most uses of flags_to_string() to release the now-malloc()ed result

Now that <bsd.prog.mk> DTRT if HOSTPROG is defined (i.e, it is a no-op),
there's no need to special-case .include-ing it.

Add '-N dbdir', to specify that user & group lookups are to be done from
dbdir/master.passwd and dbdir/group, using simple text file parsing
routines from ../../usr.sbin/mtree/getid.c.

makefile delint. use NETBSDSRCDIR as appropriate

Add non-NetBSD host hooks.

Add hooks to allow toolchain bits to be reachover-built at the top level.

create a "stat_flags.h" to go with stat_flags.c

Back out the .PATH.c changes. The .depend problem (and others)
will be fixed using the new .NOPATH make feature instead.

Use .PATH.c: ...

- Makefile cleanups

Remove kluge for GCC bug on m68k.

XXX Kludge to make this compile with large MAXBSIZE until the
XXX GCC bug it tickles is fixed.

Use ${INSTALL}.

specify man pages the new way.

Merged with 4.4lite.
Changed to conform to NetBSD's new RCS Id convention.
Changed to use err(),errx(),warn(),warnx().

Add RCS identifiers.

Use ${COPY}, not -c for install.

Define `realinstall' target, not `install', and let bsd.prog.mk do dependencies.

make install copy, rather than move, the binary.

branches: 1.1.1;
Initial revision