Security Update: Firefox and Thunderbird

Two regular security updates were released in March:

• Firefox: Upgraded to 45.8.0 for Slackware 14.1 and 14.2 and 52.0 for current
• Thunderbird: Upgraded to 45.8.0 for Slackware 14 and newer

Firefox in current is now rebuilt with ALSA support, just in case PA is missing or removed (some people still can't move on from PA history). A bunch of xf86-video packages are now being restored after the latest update is now compatible with xorg-server 1.19.2. FFmpeg bug a little bump and updated the autodetected optional dependency support and we have more bumping in kmod, binutils, coreutils, harfbuzz, libepoxy, libinput, motif, gimp, network-manager-applet, and last but not least, mesa.

MESA 17.0.1 has entered Slackware Current even though it was just released last week and 17.0 was released about a month ago. It's a big win for users with modern hardware.