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Merge branch 'master' of https://github.com/czchen/TSF-chewing

# By ChangZhuo Chen (1) and JuiWen Hsu (1)
* 'master' of https://github.com/czchen/TSF-chewing:
  Update submodule libchewing
  Modify code to UNICODE Base
Fix indent and tailing whitespace
Fix wrong parameters in Unicode API