GCC was giving us warnings, most OS's now just run fork() when you call
vfork(), and looking at the standard definition of vfork() we are a long way
from using it safely anyway: you're not allowed to even call a function before
you exec().
GNU make already assume C89 or later throughout the codebase, and
that preprocessor conditional was no longer used anyway.
* configure.ac: Remove AC_DEFINE of HAVE_ANSI_COMPILER.
* config.ami.template: Remove #define of HAVE_ANSI_COMPILER.
* config.h-vms.template: Likewise.
* config.h.W32.template: Likewise.
* configh.dos.template: Likewise.
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
We've required support for ANSI C (ISO C 89) or better for quite a while. Get
rid of the old varags.h, doprnt() stuff and simply assume ANSI C variadic
function capability and basic C runtime library support (vfprintf, vsprintf,
etc.)
