Many of the plugins in vim-plugin-names are out of date and redirect to
their new github repos. This commit adds a flag to automatically update
these and defines a process for committing these updates into nixpkgs.

In response to @timokau's review here are a couple changes:

- Decrease the fragility of the replacement code by normalizing
whitespace on each line.
- Throw an error when plugins are renamed rather than silently aliasing
to the new name.

Per review, the input file will now be rewritten automatically if
redirects are found.

Python's `sorted` method works a little differently than `sort` in the
handling of dashes.

When an updated redirect results in a package name change, not just an
owner change, throw an error to warn users the package names has
changed.

Without pygments doc8 will throw "errors" since it cannot check code
blocks. Pygments has since been added to the dependencies upstream [1],
though that hasn't made it into a release yet. I think we should already
adopt this now.

[1] PyCQA/doc8@b693181

Format meta to match standard practice.

VimPlugins: update redirected repos

Gwyddion has a large number of optional dependencies. In this update,
those dependencies have been added with options set mostly to true,
and an option (default false) for working Python 2.7 support in the
program and in Python has been added. I have also added myself as a
maintainer as no maintainer is currently set.

google-cloud-sdk: 281.0.0 -> 286.0.0

wire-desktop: linux 3.12.2916 -> 3.15.2922, mac 3.12.3490 -> 3.15.3621

bibutils: 6.8 -> 6.10

vimacs: init at 2016-03-24

This is slightly outdated, required by polysemy-plugin, the actual fix
for this will be forthcoming as soon as hackage-packages.nix is
updated.

This update was generated by hackage2nix v2.15.1 from Hackage revision
commercialhaskell/all-cabal-hashes@e0bc864.