add folder chars/, mv 5c5c.pl, charname.pl, and gen_big5.pl to it
update gen_big5.pl

1. update reference URL
2. add comment header at output file
update 5c5c.pl: add main() and message
remove chn-2.pl: useless now
rename chn-3.pl to big5-text-io-demo.pl
move big5.txt to data folder
update big5-text-io-demo.pl

add message
update lib and data file path
update big5.txt: add comment header

This data file is generated by gen_big5.pl
There are several script need it for reference table.
update encoding-tw for more message
remove utf8_char_note.pl: no use any more
remove show_diff.pl: no use any more
remove stroke_range.txt: duplicated file
remove strok.txt
update c3.txt to encoding UTF-8
update kTotalStrokes.txt: add comment
update stroke_range.pl: add comment
review unihan_strokes.pl: add comment and update data file
chn-1.pl: remove because not needed
Merge branch 'char'