[poppler] Poppler 0.49.0 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.49.0.tar.xz

Changes against 0.48.0 include:
core:
 * Merge type3 glyph handling from xpdf 3.04. Bug #96667
 * Continue rendering in case of 'Singular matrix in shading pattern fill. Bug #98623
 * Fix memory leak in parametrized gouraudTriangleShadedFill
 * Fix crash on broken files
 * PDFDoc::setDocInfoStringEntry(): treat value consisting of just the unicode marker as an empty string
 * Fix UBSAN warning
 * Misc compile fixes

utils:
 * pdfseparate: remove extra '%' in error message
        
build system:
 * configure: Fix typo in disable nss help string

Testing, patches and bug reports welcome.

Cheers,
  Albert