Make core dumps work

Core dumps are written to the /var/local/dumps directory.

testing/hosts/default/etc/profile.d/coredumps.sh

@@ -0,0 +1,5 @@
+#!/bin/sh -e
+
+ulimit -c unlimited >/dev/null 2>&1
+install -m 1777 -d /var/local/dumps >/dev/null 2>&1
+echo "/var/local/dumps/core.%e.%p" > /proc/sys/kernel/core_pattern

testing/hosts/default/etc/security/limits.conf

@@ -53,6 +53,6 @@
 #ftp             -       chroot          /ftp
 #@student        -       maxlogins       4
 
-* hard core unlimited
+* soft core unlimited
 
 # End of file

testing/hosts/default/etc/sysctl.conf

@@ -57,4 +57,6 @@ net.ipv6.conf.all.forwarding=1
 #
 # Log Martian Packets
 #net.ipv4.conf.all.log_martians = 1
-#
+
+# Enable coredump for suid binaries
+fs.suid_dumpable = 1