ref: cd711ec1346a827a8115f5bda7b5da57f9e7c181
dir: /sys/src/ape/lib/ap/plan9/execle.c/
#include <unistd.h>
int
execle(const char *name, const char *arg0, const char *, ...)
{
char *p;
for(p=(char *)(&name)+1; *p; )
p++;
return execve(name, &arg0, (char **)p+1);
}