Inform about system call memory write protection and stack mapping

violations in system accounting.  This will help to find missbehaving
programs and possible attacks.  The flags bit field is full, so
recycle the PDP-11 compatibility on VAX.  lastcomm(1) prints the
AMAP flag as 'M'.  daily(8) prints a list of affected processes.
OK deraadt@

src/etc/daily

@@ -1,5 +1,5 @@
 #
-#	$OpenBSD: daily,v 1.92 2019/07/25 13:13:53 bluhm Exp $
+#	$OpenBSD: daily,v 1.93 2019/09/09 20:02:26 bluhm Exp $
 #	From: @(#)daily	8.2 (Berkeley) 1/25/94
 #
 # For local additions, create the file /etc/daily.local.
@@ -74,7 +74,7 @@ if [ -f /var/account/acct ]; then
 		mv -f /var/account/acct.0 /var/account/acct.1
 	cp -f /var/account/acct /var/account/acct.0
 	sa -sq
-	lastcomm -f /var/account/acct.0 | grep -e ' -[A-Z]*[PTU]'
+	lastcomm -f /var/account/acct.0 | grep -e ' -[A-Z]*[MPTU]'
 fi
 
 # If ROOTBACKUP is set to 1 in the environment, and