luajit-rocks under windows

[rns]

Hi, I played with your repo under windows xp, cmake 3.0.2 and msvc 2010 and here are some things I had to do to make it work. Otherwise, very pleasant experience, thanks a lot.

• With this patch, luarocks (built from this repo) runs command line tools correctly

 if detected.windows then
-   local full_prefix = site_config.LUAROCKS_PREFIX.."\\"..cfg.major_version
+   local full_prefix = site_config.LUAROCKS_PREFIX
    extra_luarocks_module_dir = full_prefix.."\\lua\\?.lua"

    for _, var in ipairs(bins) do
       if defaults.variables[var] then
-         defaults.variables[var] = full_prefix.."\\tools\\"..defaults.variables[var]
+         defaults.variables[var] = full_prefix..defaults.variables[var]
       end

• With this dir added (files from torch7-split repo) cmake doesn't complain about files missing in bin. Not sure if all of them are needed, though.

Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

        new file:   luarocks/win32/bin/7z.dll
        new file:   luarocks/win32/bin/7z.exe
        new file:   luarocks/win32/bin/chmod.exe
        new file:   luarocks/win32/bin/cp.exe
        new file:   luarocks/win32/bin/find.exe
        new file:   luarocks/win32/bin/libeay32.dll
        new file:   luarocks/win32/bin/libiconv2.dll
        new file:   luarocks/win32/bin/libintl3.dll
        new file:   luarocks/win32/bin/libssl32.dll
        new file:   luarocks/win32/bin/ls.exe
        new file:   luarocks/win32/bin/md5sum.exe
        new file:   luarocks/win32/bin/mkdir.exe
        new file:   luarocks/win32/bin/mv.exe
        new file:   luarocks/win32/bin/objdump.exe
        new file:   luarocks/win32/bin/pwd.exe
        new file:   luarocks/win32/bin/rm.exe
        new file:   luarocks/win32/bin/rmdir.exe
        new file:   luarocks/win32/bin/test.exe
        new file:   luarocks/win32/bin/uname.exe
        new file:   luarocks/win32/bin/wget.exe

[enricoschroeder]

@rns thanks for the fix
Those steps are still needed as of now to make things run (tested on Windows8). Could you please include the above changes, this would have saved me (and supposedly others trying to get this to run) quite some time...