gnu: gash, gash-utils: Build with Guile 3.0.

* gnu/packages/shells.scm (gash)[source]: Add 'modules' and 'snippet'.
[inputs]: Change GUILE-2.2 to GUILE-3.0.
(gash-utils)[source]: Add 'modules' and 'snippet'.
[inputs]: Change GUILE-2.2 to GUILE-3.0.
* gnu/packages/commencement.scm (gash-utils-boot)[source]: Remove
unneeded 'modules' field, and add 'snippet'.
(gash-utils-boot)[source]: New field.
* gnu/packages/patches/gash-utils-ls-test.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu/packages/patches/gash-utils-ls-test.patch

@@ -0,0 +1,25 @@
+'ls.scm' monkey-patches (ice-9 getopt-long) to allow it to recognize '-1'
+as a valid option.  Unfortunately, monkey patching no longer works with
+Guile 3.0 due to inlining, so change the test to make do without '-1'.
+
+diff --git a/tests/core-utils.org b/tests/core-utils.org
+index d35ede8..22718e3 100644
+--- a/tests/core-utils.org
++++ b/tests/core-utils.org
+@@ -93,14 +93,11 @@
+ * ls
+ :script:
+ #+begin_src sh
+-  ls -1 tests/data/star
++  ls tests/data/star
+ #+end_src
+ :stdout:
+ #+begin_example
+-  0
+-  1
+-  2
+-  3
++  0  1  2  3                                                                    
+ #+end_example
+ 
+ * test-file