bug#26367: Please add emacs-adaptive-wrap package

[Ivan Vilata i Balaguer <ivan@selidor.net>]

Hi, this is a wishlist request to add the
[adaptive-wrap](https://elpa.gnu.org/packages/adaptive-wrap.html) ELPA
package to GNU Guix.  The following definition, as produced by ``guix
import elpa adaptive-wrap`` (except for removing the ``license:``
prefix) seems to work without issues with ``guix install -f FILE``:

```
(use-modules (guix)
             (guix build-system emacs)
             (guix licenses))

(package
  (name "emacs-adaptive-wrap")
  (version "0.5")
  (source
    (origin
      (method url-fetch)
      (uri (string-append
             "http://elpa.gnu.org/packages/adaptive-wrap-"
             version
             ".el"))
      (sha256
        (base32
          "0frgmp8vrrml4iykm60j4d6cl9rbcivy9yh24q6kd10bcyx59ypy"))))
  (build-system emacs-build-system)
  (home-page
    "http://elpa.gnu.org/packages/adaptive-wrap.html")
  (synopsis "Smart line-wrapping with wrap-prefix")
  (description
    "This package provides the `adaptive-wrap-prefix-mode' minor mode which sets
the wrap-prefix property on the fly so that single-long-line paragraphs get
word-wrapped in a way similar to what you'd get with M-q using
adaptive-fill-mode, but without actually changing the buffer's text.")
  (license gpl3+))
```

Thank you very much,

-- 
Ivan Vilata i Balaguer -- https://elvil.net/