Make M-width small-capital characters use `diversityT`.

[jmcwilliams403]

Certain characters like small capital M (as well as Cyrillic lower em) looked ridiculously wide at X height. This makes any small-capital characters that used diversityM instead use diversityT. True lowercase letters are left alone.

Also smooth out arch for small capital D.

Aᴀa Æᴁæ Bʙb Cᴄc Dᴅd Ðᴆð
Eᴇe Fꜰf Gɢg Hʜh Iɪi Jᴊj
Kᴋk Lʟl Mᴍm Nɴn Oᴏo Œɶœ
Pᴘp Qꞯq Rʀr Sꜱs Tᴛt Uᴜu
Vᴠv Wᴡw Xxx Yʏy Zᴢz Ʒᴣʒ
Шꟺɯ Ψᴪψ

Aile Thin Upright Before: Aile Thin Upright After: Aile Regular Upright Before: Aile Regular Upright After: Aile Heavy Upright Before: Aile Heavy Upright After: Aile Thin Italic Before: Aile Thin Italic After: Aile Regular Italic Before: Aile Regular Italic After: Aile Heavy Italic Before: Aile Heavy Italic After: Etoile Thin Upright Before: Etoile Thin Upright After: Etoile Regular Upright Before: Etoile Regular Upright After: Etoile Heavy Upright Before: Etoile Heavy Upright After: Etoile Thin Italic Before: Etoile Thin Italic After: Etoile Regular Italic Before: Etoile Regular Italic After: Etoile Heavy Italic Before: Etoile Heavy Italic After: