Talk about "native Windows API", not "Woe32". * lib/accept4.c: Update comments to mention native Windows. * lib/execute.c: Likewise. * lib/fatal-signal.c: Likewise. * lib/localcharset.c: Likewise. * lib/nanosleep.c: Likewise. * lib/nl_langinfo.c: Likewise. * lib/pclose.c: Likewise. * lib/pipe-filter-gi.c: Likewise. * lib/pipe-filter-ii.c: Likewise. * lib/pipe.c: Likewise. * lib/pipe2.c: Likewise. * lib/popen.c: Likewise. * lib/progreloc.c: Likewise. * lib/relocatable.c: Likewise. * lib/sigaction.c: Likewise. * lib/sigprocmask.c: Likewise. * lib/spawn-pipe.h: Likewise. * lib/spawn-pipe.c: Likewise. * lib/spawni.c: Likewise. * lib/stat-time.h: Likewise. * lib/w32spawn.h: Likewise. * tests/test-isatty.c: Likewise. * lib/config.charset: More comments. * doc/gnulib-intro.texi: Mention native Windows. * doc/posix-functions/_Exit_C99.texi: Likewise. * doc/posix-headers/fcntl.texi: Likewise.