bump crengine: various fixes and FB2 tweaks
bump crengine: various fixes and FB2 tweaks

Includes:
- New German hyphenation patterns
- CSS: adds text-align-last: -cr-right-if-not-first
  private keywords
- CSS: adds "-cr-only-if: fb2-document"
- fb2.css: fix verses, minor cleanup
- FB2 footnotes: fix spacing between number and text
- ldomTextCollector: guess block boundaries better
- Text: fix read/write outside array bounds
- Text: fix read outside array bounds
- Fix crash when more than 64 nested elements
- Fix possible crash on book with embedded fonts load
- (Upstream) lvstsheet: avoid compilation warnings
- Strut confining: don't when there is no strut
- CSS: switch -cr-hint from enum to bitmap

Frenzie/koreader,poire-z/koreader,NiLuJe/koreader,NiLuJe/koreader,koreader/koreader,poire-z/koreader,Markismus/koreader,mwoz123/koreader,koreader/koreader,pazos/koreader,Frenzie/koreader,Hzj-jie/koreader