Merge remote-tracking branch \'toybox/master\' into HEAD

Merge remote-tracking branch \'toybox/master\' into HEAD
am: 87bfced0f8

* commit '87bfced0f861312fd9ee9895aef9ac77aa72f6be':
  Fix remaining pkill tests.
  Fix pkill -9.
  Don't truncate number fields for anything but right edge of screen, instead let them overflow and try to reclaim extra space from later short fields.
  Make -o COMMAND show parent command path for threads, and use saved length calculations instead of doing strlen() on strings again to store lengths.
  Comment and help text tweaks.
  Add bufgetgrgid()
  Make build dependencies more granular. This should fix the problem where "make top; make ps" produces a ps that can't do -A because generated/obj/ps.o didn't get rebuilt.
  Add bufgetpwuid. (Repeated calls to getpwuid() are really expensive.)
  Add top -O
  Add stat -tL and -c %m%t%T.

Change-Id: If176e7107857657fd8289e72240236256c1cb0db