High: Exit reason string support updates

The following agents have been updated. These were all originally their own commit. I consolidated them into a single commit for this update.

High: apache: exit reason string support
High: clvmd: exit reason support
High: conntrackd: exit reason support
High: CTDB: exit reason support
High: Delay: exit reason string support
High: delay: exit reason support
High: Filesystem: exit reason support
High: galera: exit reason string support
High: IPsrcaddr: exit reason support
High: clvmd: exit reason support
High: MailTo: exit string support
High: mysql: exit string support
High: named: exit reason support
High: pgsql: exit reason support
High: postfix: exit reason support
High: Route: exit reason support
High: rsyncd: exit reason support
High: SendArp: exit string support
High: slapd: exit reason support
High: Squid: exit reason support
High: symlink: exit reason support
High: mysql-common: exit reason support
High: tomcat: exit reason support
High: Xinetd: exit reason support