1.6.4 and earlier protocol data (pre-Netty)

Add protocol for 1.6.4 and earlier versions

This is before the large protocol rework (in http://wiki.vg/Protocol_History#13w41a, using Netty), vastly different overall packet structure:

No length prefix, instead the packet length can only be known after fully parsing it (I hear supporting this will require enhancements to ProtoDef). No separate namespace for client/server packet types either, or states.

Supporting 1.6.4 will be a large effort, but once complete, supporting earlier versions should be relatively easier (including possibly all the way back to 1.0.0).

References:

• http://wiki.vg/Protocol_version_numbers#Versions_before_the_Netty_rewrite
• http://wiki.vg/Protocol_History#13w41a
• http://wiki.vg/index.php?title=Protocol&oldid=4899 - 1.6.4 (78)
• https://github.com/PrismarineJS/node-minecraft-protocol/blob/master/HISTORY.md#0116 - 0.11.6
• https://github.com/PrismarineJS/node-minecraft-protocol/blob/5e75cdf75d537ee5460d44ccf80f90528c515af8/lib/protocol.js - 1.6.4 in NMP

Start with the linked node-minecraft-protocol lib/protocol.js implementation for 1.6.4, then compare its packet structure with the referenced wiki protocol history and version-number pages. Check how this repository represents protocol data and where ProtoDef limitations affect parsing. Done means 1.6.4 protocol data is supported, with earlier versions assessed or added as scope permits.