Log Message:
poppler: updated to 0.76.1

poppler-0.76.1:

core:
 * Make the mul tables be calculated at compile time with constexpr.
 * splash: Fix compile with SPLASH_CMYK enabled
 * Some typo fixing in error messages

qt5:
 * Fix regression in annotation handling

build system:
 * Fix some typos in build system output and comments

poppler-0.76.0:

core:
 * Fix regression on case-insensitive search.
 * Remove GooList, use std::vector instead
 * Fix radiobutton reporting wrong state.
 * Handle UTF16-LE strings
 * Don't error out if there's no DA in FreeText annotation
 * cairo: Compute correct coverage values for box filter.
 * cairo: Constrain number of cycles in rescale filter.
 * Read more fields from ViewerPreferences
 * Introduce and use Ref::INVALID
 * Fix crashes in broken files
 * Fix mismatched free/delete
 * Add missing include guards

utils:
 * pdftohtml: Properly initialize HtmlOutputDev::page to avoid SIGSEGV upon \ 
error exit.

poppler-0.75.0:

core:
 * Fix rendering of some annotations
 * Fix crashes in broken files
 * Small internal code improvements

cpp:
 * Improve documentation
 * tests: Add showing version information to poppler-dump

utils:
 * pdfattach: new util
 * pdftohtml: add -dataurls parameter
 * pdftoppm: add -sep and -forcenum parameters
 * pdftohtml: make singleHtml and stout not mutually exclusive
 * pdfsig: fix use after free