o Cleanup of includes: user.h may be a catch-all, but that's not

entirely desirable.  Back out previous commit, and clean up includes
  to be more minimal.

Submitted by:	bde

lib/libkvm/kvm_getloadavg.c

@@ -40,12 +40,11 @@ static char sccsid[] = "@(#)kvm_getloadavg.c	8.1 (Berkeley) 6/4/93";
 #endif
 #endif /* LIBC_SCCS and not lint */
 
-#include <sys/param.h>
-#include <sys/sysctl.h>
-#include <sys/user.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
 
 #include <stdlib.h>
-#include <fcntl.h>
 #include <limits.h>
 #include <nlist.h>
 #include <kvm.h>