gnu: Move most packages from guile.scm to new module.

* gnu/packages/guile.scm (artanis, guildhall, guile-aspell, guile-bash,
guile-8sync, guile-daemon, guile-dsv, guile-fibers, guile-syntax-highlight,
guile-sjson, guile-colorized, guile-pfds, guile-aa-tree, guile-simple-zmq,
jupyter-guile-kernel, guile-sparql, guile-debbugs, guile-email,
guile-debbugs-next, guile-newt, guile-mastodon, guile-parted, guile-xosd,
guile-dbi, guile-dbd-sqlite3, guile-config, guile-hall, guile-ics, guile-wisp,
guile-sly, g-wrap, guile-miniadapton, guile-reader, guile2.2-reader,
guile-ncurses, guile-ncurses/gpm, guile-lib, guile2.0-lib, guile2.2-lib,
guile-minikanren, guile2.0-minikanren, guile2.2-minikanren, guile-irregex,
guile2.0-irregex, guile2.2-irregex, haunt, guile2.0-haunt, guile2.2-haunt,
guile-redis, guile2.0-redis, guile2.2-redis, guile-commonmark,
guile2.0-commonmark, guile2.2-commonmark, mcron, mcron2): Move these variables
from here...
* gnu/packages/guile-xyz.scm: ...to this new file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* gnu/installer.scm,
gnu/packages/bioinformatics.scm,
gnu/packages/ci.scm,
gnu/packages/gtk.scm,
gnu/packages/guile.scm,
gnu/packages/mail.scm,
gnu/packages/package-management.scm,
gnu/packages/skribilo.scm,
gnu/packages/web.scm,
gnu/services/mcron.scm: Update module references.

gnu/installer.scm

@@ -31,6 +31,7 @@
   #:use-module (gnu packages cryptsetup)
   #:use-module (gnu packages disk)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:autoload   (gnu packages gnupg) (guile-gcrypt)
   #:use-module (gnu packages iso-codes)
   #:use-module (gnu packages linux)

gnu/local.mk

@@ -220,6 +220,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/gtk.scm				\
   %D%/packages/guile.scm			\
   %D%/packages/guile-wm.scm			\
+  %D%/packages/guile-xyz.scm			\
   %D%/packages/gv.scm				\
   %D%/packages/gxmessage.scm			\
   %D%/packages/hardware.scm			\

gnu/packages/bioinformatics.scm

@@ -72,6 +72,7 @@
   #:use-module (gnu packages graph)
   #:use-module (gnu packages groff)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages haskell)
   #:use-module (gnu packages haskell-check)
   #:use-module (gnu packages haskell-web)

gnu/packages/ci.scm

@@ -32,6 +32,7 @@
   #:use-module (gnu packages compression)
   #:use-module (gnu packages databases)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages gnupg)
   #:use-module (gnu packages mail)
   #:use-module (gnu packages package-management)

gnu/packages/gtk.scm

@@ -74,6 +74,7 @@
   #:use-module (gnu packages python)
   #:use-module (gnu packages python-xyz)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages cups)
   #:use-module (gnu packages xml)
   #:use-module (gnu packages xorg)

gnu/packages/mail.scm

@@ -76,6 +76,7 @@
   #:use-module (gnu packages gsasl)
   #:use-module (gnu packages gtk)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages flex)
   #:use-module (gnu packages kerberos)
   #:use-module (gnu packages libcanberra)

gnu/packages/package-management.scm

@@ -52,6 +52,7 @@
   #:use-module (gnu packages graphviz)
   #:use-module (gnu packages gtk)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages lisp)
   #:use-module (gnu packages man)

gnu/packages/skribilo.scm

@@ -22,6 +22,7 @@
   #:use-module (guix licenses)
   #:use-module (guix build-system gnu)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages lout)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages plotutils)

gnu/packages/web.scm

@@ -87,6 +87,7 @@
   #:use-module (gnu packages gperf)
   #:use-module (gnu packages gtk)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages java)
   #:use-module (gnu packages jemalloc)
   #:use-module (gnu packages image)

gnu/services/mcron.scm

@@ -20,7 +20,7 @@
   #:use-module (gnu services)
   #:use-module (gnu services base)
   #:use-module (gnu services shepherd)
-  #:autoload   (gnu packages guile) (mcron)
+  #:autoload   (gnu packages guile-xyz) (mcron)
   #:use-module (guix deprecation)
   #:use-module (guix records)
   #:use-module (guix gexp)