gnu: Move asciidoc and doxygen to new module.

* gnu/packages/asciidoc.scm (asciidoc): Move this...
* gnu/packages/doxygen.scm (doxygen): ...and this...
* gnu/packages/documentation.scm: ...to here.  New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add accordingly.

gnu/local.mk

@@ -40,7 +40,6 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/anthy.scm			\
   gnu/packages/apl.scm				\
   gnu/packages/apr.scm				\
-  gnu/packages/asciidoc.scm			\
   gnu/packages/aspell.scm			\
   gnu/packages/attr.scm				\
   gnu/packages/audacity.scm			\
@@ -98,7 +97,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/dns.scm				\
   gnu/packages/docbook.scm			\
   gnu/packages/docker.scm			\
-  gnu/packages/doxygen.scm			\
+  gnu/packages/documentation.scm		\
   gnu/packages/dunst.scm			\
   gnu/packages/dvtm.scm				\
   gnu/packages/ebook.scm			\

gnu/packages/asciidoc.scm

@@ -1,52 +0,0 @@
-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (gnu packages asciidoc)
-  #:use-module (guix licenses)
-  #:use-module (guix packages)
-  #:use-module (guix download)
-  #:use-module (gnu packages python)
-  #:use-module (guix build-system gnu)
-  #:autoload   (gnu packages zip) (unzip))
-
-(define-public asciidoc
-  (package
-    (name "asciidoc")
-    (version "8.6.9")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "mirror://sourceforge/asciidoc/asciidoc-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "1w71nk527lq504njmaf0vzr93pgahkgzzxzglrq6bay8cw2rvnvq"))))
-    (build-system gnu-build-system)
-    (arguments '(#:tests? #f))                    ; no 'check' target
-    (inputs `(("python" ,python-2)))
-    (home-page "http://www.methods.co.nz/asciidoc/")
-    (synopsis "Text-based document generation system")
-    (description
-     "AsciiDoc is a text document format for writing notes, documentation,
-articles, books, ebooks, slideshows, web pages, man pages and blogs.
-AsciiDoc files can be translated to many formats including HTML, PDF,
-EPUB, man page.
-
-AsciiDoc is highly configurable: both the AsciiDoc source file syntax and
-the backend output markups (which can be almost any type of SGML/XML
-markup) can be customized and extended by the user.")
-    (license gpl2+)))

gnu/packages/documentation.scm

@@ -1,4 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2014, 2016 Andreas Enge <andreas@enge.fr>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -16,18 +17,47 @@
 ;;; You should have received a copy of the GNU General Public License
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
-(define-module (gnu packages doxygen)
+(define-module (gnu packages documentation)
-  #:use-module ((guix licenses) #:select (gpl3+))
+  #:use-module (guix licenses)
   #:use-module (guix packages)
   #:use-module (guix download)
+  #:use-module (guix build-system gnu)
   #:use-module (guix build-system cmake)
   #:use-module (gnu packages)
+  #:use-module (gnu packages python)
   #:use-module (gnu packages bison)
   #:use-module (gnu packages flex)
   #:use-module (gnu packages graphviz)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages xml)
-  #:use-module (gnu packages python))
+  #:autoload   (gnu packages zip) (unzip))
+
+(define-public asciidoc
+  (package
+    (name "asciidoc")
+    (version "8.6.9")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "mirror://sourceforge/asciidoc/asciidoc-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "1w71nk527lq504njmaf0vzr93pgahkgzzxzglrq6bay8cw2rvnvq"))))
+    (build-system gnu-build-system)
+    (arguments '(#:tests? #f))                    ; no 'check' target
+    (inputs `(("python" ,python-2)))
+    (home-page "http://www.methods.co.nz/asciidoc/")
+    (synopsis "Text-based document generation system")
+    (description
+     "AsciiDoc is a text document format for writing notes, documentation,
+articles, books, ebooks, slideshows, web pages, man pages and blogs.
+AsciiDoc files can be translated to many formats including HTML, PDF,
+EPUB, man page.
+
+AsciiDoc is highly configurable: both the AsciiDoc source file syntax and
+the backend output markups (which can be almost any type of SGML/XML
+markup) can be customized and extended by the user.")
+    (license gpl2+)))
 
 (define-public doxygen
   (package