Avoid comment markers in EXTRA_DIST

Automake now warns about escaped comment markers in `EXTRA_DIST`.
Avoid the one instance of this by including `tests/data/acls` by
directory name instead of listing the individual files with weird
names.

Makefile.am

@@ -1,7 +1,7 @@
 # Automake makefile for remctl.
 #
 # Written by Russ Allbery <[email protected]>
-# Copyright 2015-2016, 2018-2022 Russ Allbery <[email protected]>
+# Copyright 2015-2016, 2018-2022, 2025 Russ Allbery <[email protected]>
 # Copyright 2016 Dropbox, Inc.
 # Copyright 2006-2014
 #     The Board of Trustees of the Leland Stanford Junior University
@@ -109,12 +109,9 @@ EXTRA_DIST = .clang-format .gitignore .github LICENSE Makefile.w32	    \
 	tests/data/acl-bad-include tests/data/acl-bad-syntax		    \
 	tests/data/acl-nonexistant tests/data/acl-recursive		    \
 	tests/data/acl-simple tests/data/acl-too-long			    \
-	tests/data/acl-valid-3 tests/data/acls/VALID_09			    \
-	tests/data/acls/val\#id tests/data/acls/val.id			    \
-	tests/data/acls/valid tests/data/acls/valid-2			    \
-	tests/data/acls/val~id tests/data/acls2/valid-4 tests/data/cmd-argv \
-	tests/data/cmd-env tests/data/cmd-hello tests/data/cmd-help	    \
-	tests/data/cmd-sleep tests/data/cmd-status			    \
+	tests/data/acl-valid-3 tests/data/acls tests/data/acls2/valid-4	    \
+	tests/data/cmd-argv tests/data/cmd-env tests/data/cmd-hello	    \
+	tests/data/cmd-help tests/data/cmd-sleep tests/data/cmd-status	    \
 	tests/data/conf-nosummary tests/data/conf-test			    \
 	tests/data/configs/bad-logmask-1 tests/data/configs/bad-include-1   \
 	tests/data/configs/bad-logmask-2 tests/data/configs/bad-logmask-3   \