Includes:
- (Upstream) various unimpacting changes to keep in sync
- (Upstream) Fix issues with legacy text rendering
- (Upstream) FB3/DocX/ODT: get lang and description metadata
- (Upstream) remove some global settings, make them per-doc
- TextLang, hyphenation: add Armenian, Friulian, Piedmontese,
Romansh, Zulu and Brazilian Portuguese.
Also make cre the prefered engine for .xhtml (over MuPDF)
and for .xml (which might be HTML).