Add Top 10, 25, 100 impacted probes PHP display.

cblmd.conf.5.in add

- disable
- threshold

Add snmptrap support.

- ToS marking failures
- Packet loss, latency, jitter alarms.

Implement handling/recording of 100% packet loss from a transmit set.

Verify that there is no packet loss recorded when a new probe is added or removed.

Add enable-udp-checksum option.

Add randomized payload size option.

Add randomized payload pattern option.

Add support for disabling MySQL and only generating traps for ToS or packet loss conditions.

- Allows user to run CBLM to only generate traps.

Add support for reflection only mode.

- Host won't transmit packets
- Host doesn't need MySQL
- Host doesn't need Net-SNMP

Add support for a remote probe to request the sender to reduce its rate.

- Sending probe would only back off for the probe that requested the back off.

Improve Roll Up
- Do we properly handle roll up when db has been MIA for longer periods of time?
- Seen roll up take 6+ minutes to complete. Are some probes removed from mesh due to this?
- Use seperate timer for optimize tables? Maybe only once a day?

Fix PHP errors when php.ini is configured to display them.
