Initial commit for dev-lua/cmsgpack, this is a new dependency for neovim.

Package-Manager: portage-2.2.10
Add new cmsgpack and lpeg dependencies to neovim.

Package-Manager: portage-2.2.10
Merge pull request #224 from JelteF/neovim

Update dependencies of neovim and add dev-lua/cmsgpack, which is one of them.