anchor.diff:  /P [dir]       (REQUIRED) Where to install. 
                  Note that version; $VERSION, will be
                  appended to this path.
  -/CONFIG [dir]  Location where the config file should be installed.
  -               Default is same place of installation
  +
  +Configuring the destinations:
   /TREE [dir]    Root of the local tree of installed rocks.
                  Default is same place of installation
  -/SCRIPTS [dir] Where to install scripts installed by rocks.
  -               Default is TREE/bin.
  -
  +/SCRIPTS [dir] Where to install commandline scripts installed by
  +               rocks. Default is TREE/bin.
  +
  +Configuring the Lua interpreter:
   /LV [version]  Lua version to use; either 5.1 or 5.2.
                  Default is 5.1
  -/L             Install LuaRocks' own copy of Lua even if detected,
  -               this will always be a 5.1 installation.
  -               (/LUA, /INC, /LIB, /BIN cannot be used with /L)
   /LUA [dir]     Location where Lua is installed - e.g. c:\lua\5.1\
                  This is the base directory, the installer will look
                  for subdirectories bin, lib, include. Alternatively
  
positive.code: 	vars.LUA_LIBDIR = vars.LIBDIR
  	vars.LUA_INCDIR = vars.INCDIR
  	vars.LUA_LIBNAME = "lua5.1.lib"
      vars.LUA_RUNTIME = "MSVCR80"
      vars.UNAME_M = "x86"
  else
      vars.UNAME_M = get_architecture()
  	print(S[[
  
  Will configure LuaRocks with the following paths:
  
negative.code:                /LIB, and /BIN options.
  /INC [dir]     Location of Lua includes - e.g. c:\lua\5.1\include
                 If provided overrides sub directory found using /LUA.
  /LIB [dir]     Location of Lua libraries (.dll) - e.g. c:\lua\5.1\lib
                 If provided overrides sub directory found using /LUA.
  /BIN [dir]     Location of Lua executables - e.g. c:\lua\5.1\bin
                 If provided overrides sub directory found using /LUA.
  /L             Install LuaRocks' own copy of Lua even if detected,
                 this will always be a 5.1 installation.
                 (/LUA, /INC, /LIB, /BIN cannot be used with /L)
  
  Compiler configuration:
  /MW            Use mingw as build system instead of MSVC
  
  Other options:
  /CONFIG [dir]  Location where the config file should be installed.
                 Default is same place of installation
  /FORCECONFIG   Use a single config location. Do not use the
                 LUAROCKS_CONFIG variable or the user's home directory.
                 Useful to avoid conflicts when LuaRocks
                 is embedded within an application.
  /F             Remove installation directory if it already exists.
  /R             Load registry information to register '.rockspec'
                 extension with LuaRocks commands (right-click).
  
  