test_string.rb: ENUMERATORS_WANTARRAY

* test/ruby/test_string.rb (TestString::ENUMERATOR_WANTARRAY): name
  test branching codition.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39493 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_string.rb: defer ENUMERATORS_WANTARRAY to next major

* test/ruby/test_string.rb (TestString::ENUMERATOR_WANTARRAY): defer
  new behavior to next major.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e