Move DefaultSymbols in the symbol package.
Add default Japanese character settings

- changed the format of main configuration to set target language
- enhanced loader tests
Change sample config file followin the new format.
Make DefaultSymbols and JaDefaultSymbols to inherit DVSymbols class
Make DefaultSymbols and JaDefaultSymbols singleton class
Merge upstream
Fix CheckStyle errors
Replace Hankaku characters to Zenkaku in Japanese character setting
Add comment explaining the language is set to en when CharacterTable is created without language parameter
Merge pull request #83 from takahi-i/add-ja-setting

Add japanese character settings