Corrigido erro de não fazer o embed do manifest em dlls compiladas pelo Visual Studio 2008 no caso de a dll fazer parte de um módulo (estar em um subdiretório). O LuaRocks não fazia corretamente o build de módulo que tivessem estrutura de diretório (como luasql.postgres).
Add a configuration option to specify manually installed rocks.

The patch adds a new configuration option - cfg.rocks_provided.
This option contains a list of packages that are either builtin or
manually installed outside of LuaRocks package management system:

    rocks_provided = {
      [module_name] = module_version.."-"..rockspec_version,
      -- ...
    }

These settings are taken into account during dependency resolution
and when search and install commands are used. An attempt to install
a rock from the list causes an error.

LuaRocks automatically adds following modules to the list:

    rocks_provided = {
       lua = lua_version.."-1",

       -- For Lua 5.2 or later:
       bit32 = lua_version.."-1",

       -- For LuaJIT:
       luajit = lj_version.."-1",
       jit = lj_version.."-1",
       ffi = lj_version.."-1",
       bit = lj_version.."-1",
       luabitop = lj_version.."-1"
    }

where lua_version extracted from _VERSION (e.g. 5.2),
      lj_version extracted from jit.version (e.g. 2.0.2).

Built-in values can be overridden by configuration options.

Closes #177.
Fixed the error of not embedding the manifest in DLLs compiled by Visual Studio 2008 in the case where the DLL is part of a module (inside a subdirectory). LusRocks was not correctly building modules with directory structure (like luasql.postgres) when compiling for win32.
Merge branch 'master' of https://github.com/echiesse/luarocks
Merge pull request #188 from echiesse/master

 Fixed the error of not embedding the manifest in DLLs compiled by Visual Studio 2008…
Merge pull request #194 from rtsisyk/gh-177-option-for-builtin-packages

Add a configuration option to specify manually installed rocks (#177)
Let's be more conservative about this for now.
Use same loop for both arrays
Let's not use "built-in" terminology in this case: avoid confusion with the "builtin" build mode.
Fix regressions caused by #194. Thank you, integrated testing!
Fix display of error message in loader.
fixed bug where context menu options did not support paths containing spaces
Merge pull request #205 from Tieske/context_menu_fix

fixed bug where context menu options did not support paths containing spaces