Change p_cpulimit to be in seconds instead of microseconds. Since

p_runtime now is a bintime, it is no longer an optimization to store
p_cpulimit as microseconds.

Suggested by:	phk

sys/kern/kern_resource.c

@@ -568,8 +568,7 @@ dosetrlimit(td, which, limp)
 		if (limp->rlim_cur > RLIM_INFINITY / (rlim_t)1000000)
 			p->p_limit->p_cpulimit = RLIM_INFINITY;
 		else
-			p->p_limit->p_cpulimit = 
-			    (rlim_t)1000000 * limp->rlim_cur;
+			p->p_limit->p_cpulimit = limp->rlim_cur;
 		break;
 	case RLIMIT_DATA:
 		if (limp->rlim_cur > maxdsiz)

sys/sys/resourcevar.h

@@ -82,7 +82,7 @@ struct plimit {
 #define	PL_SHAREMOD	0x01		/* modifications are shared */
 	int	p_lflags;
 	int	p_refcnt;		/* number of references */
-	rlim_t	p_cpulimit;		/* current cpu limit in usec */
+	rlim_t	p_cpulimit;		/* current cpu limit in sec */
 };
 
 #ifdef _KERNEL