Support 1.7, 1.6, 1.5.2 on spigot 1.8.3

Known issues:

• [1.5.2, 1.6] Stats are not sent - won't be fixed, no point in it anyway
• [1.5.2] Can't control vehicle - won't be fixed, probably impossible to do this properly

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Spigot: http://www.spigotmc.org/resources/protocolsupport.7201/

Jenkins: http://build.true-games.org/job/ProtocolSupport/

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Licensed under the terms of GNU GPLv3