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/lua/luarocks/dir.lua

@@ -0,0 +1,74 @@
+
+--- Generic utilities for handling pathnames.
+local dir = {}
+package.loaded["luarocks.dir"] = dir
+
+dir.separator = "/"
+
+--- Strip the path off a path+filename.
+-- @param pathname string: A path+name, such as "/a/b/c"
+-- or "\a\b\c".
+-- @return string: The filename without its path, such as "c".
+function dir.base_name(pathname)
+   assert(type(pathname) == "string")
+
+   local base = pathname:gsub("[/\\]*$", ""):match(".*[/\\]([^/\\]*)")
+   return base or pathname
+end
+
+--- Strip the name off a path+filename.
+-- @param pathname string: A path+name, such as "/a/b/c".
+-- @return string: The filename without its path, such as "/a/b".
+-- For entries such as "/a/b/", "/a" is returned. If there are
+-- no directory separators in input, "" is returned.
+function dir.dir_name(pathname)
+   assert(type(pathname) == "string")
+   return (pathname:gsub("/*$", ""):match("(.*)[/]+[^/]*")) or ""
+end
+
+--- Describe a path in a cross-platform way.
+-- Use this function to avoid platform-specific directory
+-- separators in other modules. Removes trailing slashes from
+-- each component given, to avoid repeated separators.
+-- Separators inside strings are kept, to handle URLs containing
+-- protocols.
+-- @param ... strings representing directories
+-- @return string: a string with a platform-specific representation
+-- of the path.
+function dir.path(...)
+   local t = {...}
+   while t[1] == "" do
+      table.remove(t, 1)
+   end
+   return (table.concat(t, "/"):gsub("([^:])/+", "%1/"):gsub("^/+", "/"):gsub("/*$", ""))
+end
+
+--- Split protocol and path from an URL or local pathname.
+-- URLs should be in the "protocol://path" format.
+-- For local pathnames, "file" is returned as the protocol.
+-- @param url string: an URL or a local pathname.
+-- @return string, string: the protocol, and the pathname without the protocol.
+function dir.split_url(url)
+   assert(type(url) == "string")
+   
+   local protocol, pathname = url:match("^([^:]*)://(.*)")
+   if not protocol then
+      protocol = "file"
+      pathname = url
+   end
+   return protocol, pathname
+end
+
+--- Normalize a url or local path.
+-- URLs should be in the "protocol://path" format. System independent
+-- forward slashes are used, removing trailing and double slashes
+-- @param url string: an URL or a local pathname.
+-- @return string: Normalized result.
+function dir.normalize(name)
+   local protocol, pathname = dir.split_url(name)
+   pathname = pathname:gsub("\\", "/"):gsub("(.)/*$", "%1"):gsub("//", "/")
+   if protocol ~= "file" then pathname = protocol .."://"..pathname end
+   return pathname
+end
+
+return dir