Ruby » Ruby master

test_unicode_escape.rb: fix test for Windows

• test/ruby/test_unicode_escape.rb (TestUnicodeEscape#test_basic):
  echo command doesn't work properly against non-ascii character on
  Windows with chcp 437. Instead we use ruby.
  [ruby-core:47709] [Bug #7076]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37050 b2dd03c8-39d4-4d8f-98ff-823fe69b080e