v3.3.9
license: update FSF addresses
docs: remove old information from HACKING
ps: possibility to display systemd unit for a process
ps: fix compiler warnings
Fixed warning about error_at_line
docs: clarification to license headers in files
SELinux spelling (rhbz#859900)
ps: possibility to display slice unit for a process
do not complain when negating selection if we can't find a user/group
procps 010114
ps: cut out code unused code