[poppler] Poppler 0.18.2 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.18.2.tar.gz

Changes against the 0.18.1 release:
core:
 * Fix leak in GooString when resizing to a smaller string
 * Fix crash if failing to parse the colorspace. Bug #42793
 * Make GfxColorSpace::parse accept dicts

qt4:
 * Use PDFDoc(wchar_t *, ...) on Windows. Bug #35378
 * Add missing include
 * Minor fixes in documentation

utils:
 * pdftocairo: Fix crash when rendering only odd/even pages in a printing 
format
        
build system:
 * Fix pkg-config files       

Testing, patches and bug reports welcome.

Albert