* sysdep.c: Remove a use of BSD_SYSTEM, which I'm trying to phase out.

Include <sys/param.h> unconditionally, as that works elsewhere and
is simpler here.  Include <sys/sysctl.h> if DARWIN_OS ||
__FreeBSD__, not if BSD_SYSTEM, since it's needed only for Darwin
and FreeBSD now.

src/ChangeLog

+2013-03-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* sysdep.c: Remove a use of BSD_SYSTEM, which I'm trying to phase out.
+	Include <sys/param.h> unconditionally, as that works elsewhere and
+	is simpler here.  Include <sys/sysctl.h> if DARWIN_OS ||
+	__FreeBSD__, not if BSD_SYSTEM, since it's needed only for Darwin
+	and FreeBSD now.
+
 2013-03-11  Paul Eggert  <eggert@cs.ucla.edu>
 	* insdel.c (adjust_after_replace): Use bool for boolean.

src/sysdep.c

@@ -38,9 +38,8 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "sysselect.h"
 #include "blockinput.h"
 
-#ifdef BSD_SYSTEM
-#include <sys/param.h>
-#include <sys/sysctl.h>
+#if defined DARWIN_OS || defined __FreeBSD__
+# include <sys/sysctl.h>
 #endif
 
 #ifdef __FreeBSD__
@@ -69,9 +68,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifdef MSDOS	/* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
 #include "msdos.h"
-#include <sys/param.h>
 #endif
 
+#include <sys/param.h>
 #include <sys/file.h>
 #include <fcntl.h>