* test/ruby/test_dir_m17n.rb (create_and_check_raw_file_name): add new
helper method to ease encoding testing. Patch by Oleg Sukhodolsky.
[ruby-core:46589][Bug #6765]
* test/ruby/test_dir_m17n.rb (test_filename_extutf8): use filesystem
encoding when reading entries and comparing.
* test/ruby/test_dir_m17n.rb (test_filename_utf8_raw_name): removed.
* test/ruby/test_dir_m17n.rb (test_filename_utf8_raw_jp_name): split test.
* test/ruby/test_dir_m17n.rb: refactoring. RE should be in the left side
of the =~ operator, and compare the result with nil is meaningless.
merge revision(s) 36509,36514: [Backport #7294]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@37554 b2dd03c8-39d4-4d8f-98ff-823fe69b080e