Bump luvit

Submodule deps/luvit 41f297e..0fe870c:
  > Merge pull request #486 from luvit/fixes/infinite_loop
  > Merge pull request #484 from luvit/fixes/add_blurb_for_embedding
  > tweaks for OSX compilation
  > Revert "Merge pull request #264 from tim-smart/feature/querystring-stringify"
  > Merge pull request #264 from tim-smart/feature/querystring-stringify
  > fix(tests): DNS Test needed tweaks
  > Merge pull request #482 from luvit/fixes/gnu_source