Security Update: libpng, samba, dhcpcd

Slackware has released three security updates on -Current (not all of them goes into -Stable release though) and also one update on -Current. The affected packages are libpng which is now upgraded to libpng-1.2.46 and libpng-1.4.8, dhcpcd upgraded to 5.2.12, and Samba upgraded to 3.5.10.

On -Current, screen is rebuilt to use a larger buffer for the termtype variable to fix crashes with long names. It's probably an annoying bugs, so Pat decided to release it early on -Current.