* Added own custom version of Lua

* Updated Lua to produce architecture-independent bytecode
* Updated Lua to load bytecode from different endianess
* Updated Lua to use optimized integer arithmetic for CPUs without an FPU
* Updated haserl-lua to fit to optimized Lua version (hopefully this should fix: "bad header in precompiled chunk" on some platforms)
* Luci core will now be bytecompiled and stripped by default to save disk space and CPU time