bump crengine: round FT metrics, split text drawing by script
bump crengine: round FT metrics, split text drawing by script

Includes:
- Fonts: round FT metrics instead of floor'ing them
- Fonts: switch to no hinting when native hinting fails
- Fonts: fix issue with Harfbuzz fallback font drawing
- Text: split measuring and word drawing by unicode script
- Page splitting: fix small memory leak
- Fix "background-color: black" ignored on inline elements
- Fix decoding of recent MOBI files
- Hardcoded elements list: add <font>

Frenzie/koreader-base,koreader/koreader-base,NiLuJe/koreader-base,Frenzie/koreader-base,NiLuJe/koreader-base,NiLuJe/koreader-base,koreader/koreader-base,Frenzie/koreader-base,NiLuJe/koreader-base,koreader/koreader-base,Frenzie/koreader-base,koreader/koreader-base