Add to 'salt' table

Upright male symbol
Add ruby glyphs to pua-extension.txt
Merge branch 'kana' into ruby

Update the database for Kana table
Add ruby glyph map to the database
Add subfont for ruby glyphs
Add 'ruby' feature
Merge branch 'ruby'
Merge branch 'master' into kana

Database update
Integrate 'vert' and 'vrt2' tables into 'kana'

Remove preprocessors no longer needed from gensql.rb