Move sync_tool to rakelib

Author: nobu

Rakefile

@@ -27,11 +27,4 @@ file "ext/date/zonetab.h" => "ext/date/zonetab.list" do |t|
      hdr, chdir: dir)
 end
 
-task :sync_tool do
-  require 'fileutils'
-  FileUtils.cp "../ruby/tool/lib/core_assertions.rb", "./test/lib"
-  FileUtils.cp "../ruby/tool/lib/envutil.rb", "./test/lib"
-  FileUtils.cp "../ruby/tool/lib/find_executable.rb", "./test/lib"
-end
-
 task :default => [:compile, :test]

rakelib/sync_tool.rake

@@ -0,0 +1,6 @@
+task :sync_tool do
+  require 'fileutils'
+  FileUtils.cp "../ruby/tool/lib/core_assertions.rb", "./test/lib"
+  FileUtils.cp "../ruby/tool/lib/envutil.rb", "./test/lib"
+  FileUtils.cp "../ruby/tool/lib/find_executable.rb", "./test/lib"
+end