Add new package: luabind

I tried to make a package for Luabind library (C++ bindings to Lua). It was needed for OSRM project.

I am not an expert in packaging, so this could need a review.

Possible problem: I have used the updated Github repository for Luabind project, not the "official" 2010-freezed version.
Add "(minnow-w64)" at the end