* pkgs: refactor needless quoting of homepage meta attribute
A lot of packages are needlessly quoting the homepage meta attribute
(about 1400, 22%), this commit refactors all of those instances.
* pkgs: Fixing some links that were wrongfully unquoted in the previous
commit
* Fixed some instances
* removing luaMessagePack (only used by neovim)
* using libmpack (updated to latest master since they fixed a lot of packaging
issues)
* package libmpack lua bidnings
* neovim expression now excepts luaPackages as an input and not individual
lua packages (to avoid depending on different lua version)