rockspec: Use library file given by LuaRocks instead of trying to find it ourselves #545
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LuaRocks can provide LUALIB and LUA_LIBDIR variables which should be better than trying to find the right library file ourselves.
Note: it does not provide them if the LuaRocks config setting
link_lua_explicitly
is false, so LuaRocks will give the following warnings in that case:These warnings happens on Linux and Mac, since they don't link against the Lua libraries. I'm not sure if there's a clean way to avoid the warnings.
Attempts to address #523.