[poppler] Poppler 0.30.1 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.31.0.tar.xz

Changes against 0.30.0 include:
core:
 * CairoOutputDev: support embedding JBIG2 image data
 * Accept malformed documents whose root is a Page instead of a Pages. Bug #88172
 * Fix crash on broken documents
 * JPEG2000Stream: Inline doGetChar and doLookChar
 * GlobalParams cleaning
        
utils:
 * pdftops: Add rasterization option. Bug #85934
        
qt4:
 * Expose whole-words search option

qt5:
 * Expose whole-words search option

Testing, patches and bug reports welcome.

Cheers,
  Albert