Use BSD raw mode on darwin. Fixes nano, tmux and others

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume@charmes.net> (github: creack)

Conflicts:
	pkg/term/termios_freebsd.go:
	  removed changes for this file because it's not present
Disable automatic killing of containers when docker stop fails

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)

Conflicts:
	container.go:
	  KillSig had to be changed to Kill
 -      if err := container.KillSig(15); err != nil {
 +      if err := container.kill(15); err != nil {
fix failing test to use kill instead of stop

TestCreateStartRestartStopStartKillRm was failing because stop has been
changed to not kill containers.

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)