[poppler] Poppler 0.55.0 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.55.0.tar.xz

Changes against 0.54.0 include:
core:
 * Fix abort in files with broken Decode arrays. KDE bug #379835
 * Fix memory leak (and probably logic bug) parsing broken XRef entries. Bug #100775
 * Fix memory leak when reconstructing broken files. Bug #100776
 * Minor optimization
 * Fix regression in GfxIndexedColorSpace::mapColorToBase. Bug #100931
 * Fix memory leak in error condition

cpp:
 * Return nullptr if the page at index can't be fetched. Bug #100981

build system:
 * Fail by default if libjpeg is not available
 * Fail by default if libopenjpeg2/1 is not available

This release was brought to you by Albert Astals Cid, Carlos Garcia Campos, Adrian Johnson, Christoph Cullmann, Francesco Poli

Testing, patches and bug reports welcome.

Cheers,
  Albert