bump crengine: enhanced block rendering, various fixes (koreader#935)

Includes:
- Fix bad word spacing in lines ending with a single char word
- Fix "list-style-position: inside" with "list-style-type: none"
- Fix missing in-page footnotes from imbricated tables
- Avoid page split with lines taller than page height
- CSS: adds more attribute selectors, handle case insensitivity flag
- Allow reentrant use of LVFormatter
- EBR1/9 Enhanced Block Rendering: selectable features set
- EBR2/9 CSS: parse and store "float:" and "clear:"
- EBR3/9 DOM/initRendMethod: wrap floats in a floatBox element
- EBR4/9 Upgrade RenderRectAccessor to cache new fields
- EBR5/9 Implement enhanced renderBlockElement()
- ERB6/9 Enhanced final block rendering and text formatting
- EBR7/9 Update drawing code to handle floats and overflows
- EBR8/9 Update XPointers/pt translation methods to handle floats
- EBR9/9 Add "-cr-only-if:" private CSS property, update epub.css
- Adds HTML5 suggested rendering stylesheet (html5.css) (koreader#300)

Author: poire-z