* Makefile ($(libc.a)(__.SYMDEF)): Target removed.
[$(build-shared)=yes] (lib): Depend on $(common-objpfx)libc.so.
* sysdeps/stub/ulimit.c: Don't include gnu-stabs.h.
* sysdeps/stub/pause.c: Likewise.
* sysdeps/stub/time.c: Likewise.
* stdlib/mbtowc.c: #if 0 out code for non-ASCII chars until the
locale data format is implemented.
* stdlib/wctomb.c: Likewise.
* mach/Makefile ($(objpfx)errsystems.c): Reenable this rule; the
gcc bug is fixed.
* mach/errsystems.c: File removed.
* Makeconfig (libc.a): Variable removed.
(+link): Don't use it.
* configure.in (AC_ARG_ENABLE calls): Use $enableval instead of
assuming `yes'.
