loadtools support for C139/140 target: -c 1004 compalstage variant supercedes the previous -c 1003 version and supports the new C139 boot code version found in the wild that expects "1004" or greater in the signature bytes

#include <stdarg.h>

extern void putchar();

int
printf(char *fmt, ...)
{
	va_list ap;
	int len;

	va_start(ap, fmt);
	len = _doprnt(fmt, ap, &putchar);
	va_end(ap);
	return(len);
}