gnu: gnuastro: Update to 0.9.

* gnu/packages/astronomy.scm (gnuastro): Update to 0.9.
[native-inputs]: Add libtool.

gnu/packages/astronomy.scm

@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2016 John Darrington <jmd@gnu.org>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
-;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -23,6 +23,7 @@
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix download)
   #:use-module (guix utils)
+  #:use-module (gnu packages autotools)
   #:use-module (gnu packages image)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages gettext)
@@ -103,7 +104,7 @@ header.")
 (define-public gnuastro
   (package
     (name "gnuastro")
-    (version "0.8")
+    (version "0.9")
     (source
      (origin
        (method url-fetch)
@@ -111,7 +112,7 @@ header.")
                            version ".tar.lz"))
        (sha256
         (base32
-         "0gx6iar3z07k9sdvpa6kchsz6fpk94xn5vcvbcigssl2dwqmlnkb"))))
+         "1c1894ixz3l8p1nmzkysgl9lz8vpqbfw1dd404kh6lvrpml7jzig"))))
     (inputs
      `(("cfitsio" ,cfitsio)
        ("gsl" ,gsl)
@@ -120,7 +121,8 @@ header.")
        ("wcslib" ,wcslib)
        ("zlib" ,zlib)))
     (native-inputs
-     `(("lzip" ,lzip)))
+     `(("libtool" ,libtool)
+       ("lzip" ,lzip)))
     (build-system gnu-build-system)
     (home-page "https://www.gnu.org/software/gnuastro/")
     (synopsis "Astronomy utilities")