[poppler] Poppler 0.77.0 released

[Albert Astals Cid]

Available from
http://poppler.freedesktop.org/poppler-0.77.0.tar.xz

The tarball is signed at http://poppler.freedesktop.org/poppler-0.77.0.tar.xz.sig with my key
http://hkps.pool.sks-keyservers.net/pks/lookup?op=get&search=0xCA262C6C83DE4D2FB28A332A3A6A4DB839EAA6D7

Release 0.77.0:
        core:
         * Fix crash on signature handling. Issue #766
         * Fix small memory leak in SignatureHandler::getCertificateInfo
         * Splash: Restrict filling of overlapping boxes. Issue #750
         * Fix crash on malformed files

        qt5:
         * Fix optional content handling with exclusive layers

        cpp:
         * Make render_page thread-safe

        utils:
         * pdfsig: Fix small memory leak
         * pdftotext: Fix typo in manpage

This release was brought to you by Albert Astals Cid, Julián Unrrein, Marek Kasik, Oliver Sander, Sebastian Berger

Testing, patches and bug reports welcome.

Cheers,
  Albert