Fix simpchar data with unicode point pass U+FFFF

There were some problem in the data generation process of Simplified
Variants. Those "simpchar" with code point passed U+FFFF were not
generated correctly into UTF-8 binary.

I've updated my generation scripts and re-generated the data.

Should fix #77.
Merge pull request #78 from yookoala/data-fix

Fix simpchar data with unicode point pass U+FFFF