export_changelog must specify the branch's url

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58078 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/make-snapshot

@@ -225,7 +225,7 @@ def package(vcs, rev, destdir, tmp = nil)
     unless /\Ar(\d+) / =~ f.readline
       abort "#{File.basename $0}: Cannot find revision from '#{last_ChangeLog}'"
     end
-    vcs.export_changelog($1.to_i, revision.to_i, "#{v}/ChangeLog")
+    vcs.export_changelog(url, $1.to_i, revision.to_i, "#{v}/ChangeLog")
   end
 
   open("#{v}/revision.h", "wb") {|f| f.puts "#define RUBY_REVISION #{revision}"}

tool/vcs.rb

@@ -307,7 +307,7 @@ class VCS
       FileUtils.rm_rf(dir+"/.svn")
     end
 
-    def export_changelog(from, to, path)
+    def export_changelog(url, from, to, path)
       range = [to, (from+1 if from)].compact.join(':')
       IO.popen({'TZ' => 'JST-9', 'LANG' => 'C', 'LC_ALL' => 'C'},
                %W"svn log -r#{range} #{url}") do |r|
@@ -424,7 +424,7 @@ class VCS
       FileUtils.rm_rf("#{dir}/.git")
     end
 
-    def export_changelog(from, to, path)
+    def export_changelog(url, from, to, path)
       range = [from, to].map do |rev|
         rev or next
         rev = cmd_read({'LANG' => 'C', 'LC_ALL' => 'C'},