* default to LuaJIT when available * add LuaBitOp for efficient bitwise operations in Lua * make lib_bits use LuaBitOp if present * add LuaBitOp licence notice * fix CMake to work with LuaJIT/LuaBitOp, enforce C99
* default to LuaJIT when available * add LuaBitOp for efficient bitwise operations in Lua * make lib_bits use LuaBitOp if present * add LuaBitOp licence notice * fix CMake to work with LuaJIT/LuaBitOp, enforce C99