base-system-busybox: disable procps utils; depend on procps-ng instead.

busybox pgrep/pkill does not support -s0,1.
busybox sysctl does not support --system.
base-system-busybox: disable chvt applet; we use kbd.
procps-ng: remove obsolete conflicts.
base-system-busybox: disable pwdx applet; we use procps-ng.
runit-void: revbump (sysctl --system re-added).