f7e1b2e56a
See https://www.mozilla.org/en-US/firefox/78.1.0/releasenotes/ Fixes https://www.mozilla.org/en-US/security/advisories/mfsa2020-32/ More or less a copy of what was in www/mozilla-firefox before the 79.0 upgrade, including: - enable unveil integration - move to /etc/firefox-esr/{pledge,unveil}.{main,gpu,content} instead of about:config knobs (maybe warrants current.html entry ?) - bring in the jumbo patch fixing 'open with' mime handling - stop building with systemwide sqlite3, unsupported upstream - ditch old patches merged upstream in the 68->78 cycles - use the shipped desktop file instead of our own - sync README briefly tested opening a pdf, an flv file and an archive with an external handler, and accessed webcam with webrtc.