This is an important refactor of the way documentation generation works

* Installs luarocks WITH it's executable (easy to install other rocks if necessary)
* Use Lua supplied with luarocks
* Create Utils/luadocumentor.bat, which works with RELATIVE PATH ! -> Everybody can generate the doc
* Updated launch files accordingly

Utils/luarocks/luarocks.lua

@@ -0,0 +1,33 @@
+#!/usr/bin/env lua
+
+-- this should be loaded first.
+local cfg = require("luarocks.cfg")
+
+local loader = require("luarocks.loader")
+local command_line = require("luarocks.command_line")
+
+program_description = "LuaRocks main command-line interface"
+
+commands = {
+   help = "luarocks.help",
+   pack = "luarocks.pack",
+   unpack = "luarocks.unpack",
+   build = "luarocks.build",
+   install = "luarocks.install",
+   search = "luarocks.search",
+   list = "luarocks.list",
+   remove = "luarocks.remove",
+   make = "luarocks.make",
+   download = "luarocks.download",
+   path = "luarocks.path_cmd",
+   show = "luarocks.show",
+   new_version = "luarocks.new_version",
+   lint = "luarocks.lint",
+   write_rockspec = "luarocks.write_rockspec",
+   purge = "luarocks.purge",
+   doc = "luarocks.doc",
+   upload = "luarocks.upload",
+   config = "luarocks.config_cmd",
+}
+
+command_line.run_command(...)