func (ls *LState) OpenLibs() {
	for _, lib := range luaLibs {
		ls.Push(ls.NewFunction(lib.libFunc))
		ls.Push(LString(lib.libName))
		ls.Call(1, 0)
	}
}
OpenLibs loads the built-in libraries. It is equivalent to running OpenLoad,
then OpenBase, then iterating over the other OpenXXX functions in any order.
package lua
const (
	BaseLibName = ""
	LoadLibName = "package"
	TabLibName = "table"
	IoLibName = "io"
	OsLibName = "os"
	StringLibName = "string"
	MathLibName = "math"
	DebugLibName = "debug"
	ChannelLibName = "channel"
	CoroutineLibName = "coroutine"
)
type luaLib struct {
	libName string
	libFunc LGFunction
}
var luaLibs = []luaLib{
	luaLib{LoadLibName, OpenPackage},
	luaLib{BaseLibName, OpenBase},
	luaLib{TabLibName, OpenTable},
	luaLib{IoLibName, OpenIo},
	luaLib{OsLibName, OpenOs},
	luaLib{StringLibName, OpenString},
	luaLib{MathLibName, OpenMath},
	luaLib{DebugLibName, OpenDebug},
	luaLib{ChannelLibName, OpenChannel},
	luaLib{CoroutineLibName, OpenCoroutine},
}