OSL: the bogus event group code appears to be unused aside from the os_EvGrpInit() call in os_Initialize(), so let's table it aside for now, and thus spare the boatload of compiler warnings.

#include <stdarg.h>

extern void putchar();

int
vprintf(fmt, ap)
	char *fmt;
	va_list ap;
{
	return(_doprnt(fmt, ap, &putchar));
}