[poppler] Poppler 0.66.0 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.66.0.tar.xz

core:
 * Fix lots of security/leak issues found by oss-fuzz
 * Splash: Optimize some files, making them 20% faster
 * Splash: Correctly manipulate spot colors if SPOT_NCOMPS != 4
 * Fix compilation with some strict compilers

This release was brought to you by Adam Reichold, Albert Astals Cid and Stefan 
Brüns

Testing, patches and bug reports welcome.

P.S: I know there's some/lots of patches waiting for review, i want to believe 
i'm slowly catching up.

Cheers,
  Albert