make fs/{namespace,super}.c forget about acct.h

These externs belong in fs/internal.h.  Rename (they are not acct-specific
anymore) and move them over there.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/super.c b/fs/super.c
index a369f89..a371ce6 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -22,7 +22,6 @@
 
 #include <linux/export.h>
 #include <linux/slab.h>
-#include <linux/acct.h>
 #include <linux/blkdev.h>
 #include <linux/mount.h>
 #include <linux/security.h>
@@ -707,7 +706,7 @@
 	if (remount_ro) {
 		if (sb->s_pins.first) {
 			up_write(&sb->s_umount);
-			acct_auto_close(&sb->s_pins);
+			sb_pin_kill(sb);
 			down_write(&sb->s_umount);
 			if (!sb->s_root)
 				return 0;