gnu: go-github-com-danwakefield-fnmatch: Move to golang-xyz.

* gnu/packages/golang.scm (go-github-com-danwakefield-fnmatch): Move
from here ...
* gnu/packages/golang-xyz.scm: ... to here.

* gnu/packages/mail.scm: Add (gnu packages golang-xyz) module.

Change-Id: I2d5d0565f4c758f49032cadfa1dcca7e884a577b

gnu/packages/golang-xyz.scm

@@ -784,6 +784,33 @@ of unit files.")))
 metrics to Graphite.")
     (license license:bsd-2)))
 
+(define-public go-github-com-danwakefield-fnmatch
+  (let ((commit "cbb64ac3d964b81592e64f957ad53df015803288")
+        (revision "0"))
+    (package
+      (name "go-github-com-danwakefield-fnmatch")
+      (version (git-version "0.0.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/danwakefield/fnmatch")
+               (commit commit)))
+         (sha256
+          (base32 "0cbf511ppsa6hf59mdl7nbyn2b2n71y0bpkzbmfkdqjhanqh1lqz"))
+         (file-name (git-file-name name version))))
+      (build-system go-build-system)
+      (arguments
+       (list
+        #:import-path "github.com/danwakefield/fnmatch"))
+      (home-page "https://github.com/danwakefield/fnmatch")
+      (synopsis "Updated clone of kballards golang fnmatch gist")
+      (description
+       "This package provides string-matching based on BSD fnmatch.3.  It is an
+updated clone of kballards golang fnmatch
+gist (https://gist.github.com/kballard/272720).")
+      (license license:bsd-2))))
+
 (define-public go-github-com-dave-jennifer
   (package
     (name "go-github-com-dave-jennifer")

gnu/packages/golang.scm

@@ -6045,31 +6045,6 @@ and aid debugging.")
 a cron spec parser and job runner.")
     (license license:expat)))
 
-(define-public go-github-com-danwakefield-fnmatch
-  (let ((commit "cbb64ac3d964b81592e64f957ad53df015803288")
-        (revision "0"))
-    (package
-     (name "go-github-com-danwakefield-fnmatch")
-     (version (git-version "0.0.0" revision commit))
-     (source
-      (origin
-       (method git-fetch)
-       (uri (git-reference
-             (url "https://github.com/danwakefield/fnmatch")
-             (commit commit)))
-       (sha256
-        (base32
-         "0cbf511ppsa6hf59mdl7nbyn2b2n71y0bpkzbmfkdqjhanqh1lqz"))
-       (file-name (git-file-name name version))))
-     (build-system go-build-system)
-     (arguments
-      '(#:import-path "github.com/danwakefield/fnmatch"))
-     (home-page "https://github.com/danwakefield/fnmatch")
-     (synopsis "Updated clone of kballards golang fnmatch gist")
-     (description "This package provides an updated clone of kballards golang
-fnmatch gist (https://gist.github.com/kballard/272720).")
-     (license license:bsd-2))))
-
 (define-public go-github-com-ddevault-go-libvterm
   (let ((commit "b7d861da381071e5d3701e428528d1bfe276e78f")
         (revision "0"))

gnu/packages/mail.scm

@@ -113,6 +113,7 @@
   #:use-module (gnu packages golang-check)
   #:use-module (gnu packages golang-crypto)
   #:use-module (gnu packages golang-web)
+  #:use-module (gnu packages golang-xyz)
   #:use-module (gnu packages groff)
   #:use-module (gnu packages gsasl)
   #:use-module (gnu packages gtk)