added suspend-pre, suspend-post and clock-fix handler scripts

QubesOS/qubes-issues#1764

usr/lib/sdwdate/clock-fix

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -e
+
+if [ ! "$(id -u)" = "0" ]; then
+   echo "ERROR: Must run as root!" >&2
+   exit 2
+fi
+
+if [ -d "/usr/lib/qubes" ]; then
+   randomized_unix_time="$(timeout --kill-after="5" "5" /usr/lib/qubes/qrexec-client-vm dom0 qubes.GetRandomizedTime)"
+else
+   echo "ERROR: Not implemented in Non-Qubes-Whonix. See: https://www.whonix.org/wiki/Troubleshooting#Clock_Fix" >&2
+   exit 3
+fi
+
+date --set "@$randomized_unix_time" >/dev/null
+
+service sdwdate restart

usr/lib/sdwdate/suspend-post

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+if [ ! "$(id -u)" = "0" ]; then
+   echo "ERROR: Must run as root!" >&2
+   exit 2
+fi
+
+## Do not interfere with the clock if the service was stopped.
+if test -f /var/run/sdwdate/was_running.status ; then
+   rm -f /var/run/sdwdate/was_running.status
+   /usr/lib/sdwdate/clock-fix || true
+fi

usr/lib/sdwdate/suspend-pre

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -e
+
+if [ ! "$(id -u)" = "0" ]; then
+   echo "ERROR: Must run as root!" >&2
+   exit 2
+fi
+
+if service sdwdate status >/dev/null ; then
+   touch /var/run/sdwdate/was_running.status
+   service sdwdate stop
+fi