[poppler] Poppler 0.23.4 (0.24 RC) released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.23.4.tar.xz

WARNING: This is a unstable release, it is actually 0.24 RC release, it 
should work like any release from the 0.22 branch, but do not blame us if it 
turns your train into a cart.

Changes against 0.23.3:
core:
 * TextOutputDev: clip the selected text rendering to the selection box. Bug 
#66983
 * CairoImageOutputDev: Fix the bounding box of saved images

build system:
 * Improve linking against pthreads

Release schedule is
 * Jul 29 - Poppler 0.24.0
We only accept bugfixes now.

Testing, patches and bug reports welcome.

Albert