* trancode.c: some minor formatting fixes
* transcode_data.h, transcode_data_iso_8859.c: Shortened
extremely frequently used macros to shorten file length.
* test/ruby/test_transcode.rb: Fixed name of test class;
added setup method to ensure all necessary encodings exist;
split tests into more test methods; added tests; fixed ordering
of arguments in assert_equal to have expected result first.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14236 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
