Added Opencomputers for 1.6.4/1.7.10

the jenkins is offcial and can be found in the MCF Thread of OpenComputers http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1293018
note from jenkins: "These builds can usually be considered stable, just use the latest one, unless a note on a specific builds says something else."
Merge pull request #55 from The-sMi/patch-3

Added Opencomputers for 1.6.4/1.7.10