Get rid of downloading Unicode data

* common.mk (lib/unicode_normalize/tables.rb): should not depend
  on Unicode data files unless ALWAYS_UPDATE_UNICODE=yes, to get
  rid of downloading Unicode data unnecessary.  [ruby-dev:49681]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55486 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Wed Jun 22 17:29:23 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* common.mk (lib/unicode_normalize/tables.rb): should not depend
+	  on Unicode data files unless ALWAYS_UPDATE_UNICODE=yes, to get
+	  rid of downloading Unicode data unnecessary.  [ruby-dev:49681]
+
 Tue Jun 21 19:44:54 2016  Martin Duerst  <duerst@it.aoyama.ac.jp>
 
 	* test/ruby/enc/test_regex_casefold.rb: Add Windows-1251, KOI8-R, and

common.mk

@@ -1051,9 +1051,11 @@ $(UNICODE_FILES):
 $(srcdir)/$(HAVE_BASERUBY:yes=lib/unicode_normalize/tables.rb): \
 	$(srcdir)/.unicode-tables.time
 
+$(srcdir)/$(ALWAYS_UPDATE_UNICODE:yes=.unicode-tables.time): $(UNICODE_FILES)
+
 $(srcdir)/.unicode-tables.time: $(srcdir)/tool/generic_erb.rb \
-		$(UNICODE_FILES) \
 		$(srcdir)/template/unicode_norm_gen.tmpl
+	$(Q) $(ALWAYS_UPDATE_UNICODE:yes=exit &&) $(MAKE) $(MFLAGS) Q=$(Q) update-unicode
 	$(Q) $(BASERUBY) $(srcdir)/tool/generic_erb.rb \
 		-c -t$@ -o $(srcdir)/lib/unicode_normalize/tables.rb \
 		-I $(srcdir) \