_.print does not work

[rosshadden]

In lua 5.1, I get the following error when using _.print:

Error: rocks/share/lua/5.1/lodash.lua:1742: attempt to call field 'pack' (a nil value)
stack traceback:
        rocks/share/lua/5.1/lodash.lua:1742: in function 'table'
        rocks/share/lua/5.1/lodash.lua:2222: in function 'print'
        modules/load.lua:9: in function 'load'
        [string "boot.lua"]:437: in function <[string "boot.lua"]:433>
        [C]: in function 'xpcall'

[rosshadden]

This is because table.pack was introduced in lua 5.2.