* test/ruby/test_eval.rb (class TestEval): Add test for shared eval
  filenames via rb_fstring().
* test/ruby/test_iseq.rb (class TestISeq): Add test for shared
  iseq labels via rb_fstring(). [Bug #9159]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43871 b2dd03c8-39d4-4d8f-98ff-823fe69b080e