-- v2: dwrite: Reuse font set entries to return set instances for collections. dwrite/tests: Add a small test for EUDC collection. dwrite: Cache set elements for returned system sets. dwrite: Remove nested structures in fontset entries. dwrite: Simplify collection initialization helper. dwrite: Create custom collections using font sets. dwrite: Create both WWS and typographic system collections using system font set. dwrite: Mark system font sets. dwrite: Remove system collection marker. dwrite: Check against local file loader in ConvertFontToLOGFONT(). dwrite/tests: Add some more tests for ConvertFontToLOGFONT().