FL-1436: Cleanup and update dev-lang/ruby

- Removes 1.9.3_p547, 2.0.0_p576 and 2.1.3
- Adds 1.9.3_p550, 2.0.0_p594 and 2.1.4
FL-1069: Cleanup and update net-analyzer/snort

- Removes 2.9.6.2
- Adds 2.9.7.0
FL-1069: Cleanup and update net-libs/daq

- Removes 2.0.2
- Adds 2.0.4