v4.0.2
Improve trace().
build-sys: Relocate lib/
top: also adapted to absent 'core id' in /proc/cpuinfo
free: --si changes base of default output
misc: Move all binaries to src
pkill: Don't show --echo twice
build-sys: Relocate library to library/
skill: Update include location too
w: Show time with TIME_BITS=64 on 32bit env