Always include the test/ directory in tarfiles

In hindsight, it's hard to see why not including it was ever an option.
* make-dist: Always include the test/ directory.
(with_tests): Remove.
(--tests, --no-tests): Make these options no-ops.
* Makefile.in (mostlyclean_dirs, maintainer_clean_dirs): Add "test".
(mostlyclean, clean, distclean, maintainer-clean):
Remove special-casing for "test".
($(CHECK_TARGETS)): Simplify.

Makefile.in

@@ -845,12 +845,11 @@ endef
 ###      target for GCC does not delete 'libgcc.a', because recompiling it
 ###      is rarely necessary and takes a lot of time.
 mostlyclean_dirs = src oldXMenu lwlib lib lib-src nt doc/emacs doc/misc \
-  doc/lispref doc/lispintro
+  doc/lispref doc/lispintro test
 
 $(foreach dir,$(mostlyclean_dirs),$(eval $(call submake_template,$(dir),mostlyclean)))
 
 mostlyclean: $(mostlyclean_dirs:=_mostlyclean)
-	[ ! -d test ] || $(MAKE) -C test $@
 
 ### 'clean'
 ###      Delete all files from the current directory that are normally
@@ -865,7 +864,6 @@ clean_dirs = $(mostlyclean_dirs) nextstep admin/charsets admin/unidata
 $(foreach dir,$(clean_dirs),$(eval $(call submake_template,$(dir),clean)))
 
 clean: $(clean_dirs:=_clean)
-	[ ! -d test ] || $(MAKE) -C test $@
 	-rm -f ./*.tmp etc/*.tmp*
 	-rm -rf info-dir.*
 	-rm -rf native-lisp
@@ -891,7 +889,6 @@ distclean_dirs = $(clean_dirs) leim lisp admin/grammars
 $(foreach dir,$(distclean_dirs),$(eval $(call submake_template,$(dir),distclean)))
 
 distclean: $(distclean_dirs:=_distclean)
-	[ ! -d test ] || $(MAKE) -C test $@
 	${top_distclean}
 
 ### 'bootstrap-clean'
@@ -900,7 +897,6 @@ distclean: $(distclean_dirs:=_distclean)
 $(foreach dir,$(distclean_dirs),$(eval $(call submake_template,$(dir),bootstrap-clean)))
 
 bootstrap-clean: $(distclean_dirs:=_bootstrap-clean)
-	[ ! -d test ] || $(MAKE) -C test $@
 	[ ! -f config.log ] || mv -f config.log config.log~
 	rm -rf ${srcdir}/info
 	rm -f ${srcdir}/etc/refcards/emacsver.tex
@@ -922,12 +918,11 @@ top_maintainer_clean=\
 	rm -fr ${srcdir}/autom4te.cache
 
 maintainer_clean_dirs = src leim lisp admin/charsets admin/grammars \
-  admin/unidata
+  admin/unidata test
 
 $(foreach dir,$(maintainer_clean_dirs),$(eval $(call submake_template,$(dir),maintainer-clean)))
 
 maintainer-clean: bootstrap-clean $(maintainer_clean_dirs:=_maintainer-clean)
-	[ ! -d test ] || $(MAKE) -C test $@
 	rm -rf ${srcdir}/info
 	rm -f ${srcdir}/etc/refcards/emacsver.tex
 	${top_maintainer_clean}
@@ -958,12 +953,7 @@ TAGS tags: lib lib-src # src
 CHECK_TARGETS = check check-maybe check-expensive check-all
 .PHONY: $(CHECK_TARGETS)
 $(CHECK_TARGETS): all
-ifeq ($(wildcard test),test)
 	$(MAKE) -C test $@
-else
-	@echo "You do not seem to have the test/ directory."
-	@echo "Maybe you used a release tarfile that lacks tests."
-endif
 
 test/%:
 	$(MAKE) -C test $*

make-dist

@@ -52,7 +52,6 @@ make_tar=no
 default_gzip=gzip
 newer=""
 with_info=yes
-with_tests=yes
 changelog=yes
 verbose=no
 
@@ -109,16 +108,10 @@ while [ $# -gt 0 ]; do
       update=no
      ;;
 
-    ## Include the test/ directory.
-    ## This is for backward compatibility to when --no-tests was the default.
-    "--tests")
-      with_tests=yes
+    "--tests"|"--no-tests")
+      echo "The option $1 no longer does anything"
      ;;
 
-    ## Exclude the test/ directory.
-    "--no-tests")
-      with_tests=no
-     ;;
 
     "--verbose")
       verbose=yes
@@ -136,7 +129,6 @@ while [ $# -gt 0 ]; do
       echo "  --no-update	don't recompile or do analogous things"
       echo "  --no-changelog	don't generate the top-level ChangeLog"
       echo "  --no-info		don't include info files"
-      echo "  --no-tests	don't include the test/ directory"
       echo "  --snapshot	same as --clean-up --no-update --tar"
       echo "  --tar		make a tar file"
       echo "  --verbose		noisier output"
@@ -402,11 +394,7 @@ manifest=MANIFEST
 # if .git is present.
 if ( [ $update = yes ] || [ ! -f $manifest ] ) && [ -r .git ]; then
   echo "Updating $manifest"
-  if [ $with_tests = yes ]; then
-    git ls-files > $manifest
-  else
-    git ls-files | grep -v '^test' >$manifest
-  fi || exit
+  git ls-files > $manifest || exit
   printf '%s\n' $possibly_non_vc_files $info_files >>$manifest || exit
   sort -u -o $manifest $manifest || exit
 fi