Fix rescheduling of alarms that are snoozed

When AlarmInitReceiver recieves android.intent.action.TIME_SET, a
call is made to AlarmStateManager.fixAlarmInstances() which will
update all alarm instances based on the newly set time.  This updates
the AlarmInstance based on the Alarm time and not the current time
for the given AlarmInstance.  This causes snoozed alarms to be
scheduled the next time the Alarm is suppose to fire off, if the
alarm a repeating alarm.  This patch fixes this behavior by passing
in a Calendar instance based on the AlarmInstance's time.

Steps to repro:
1) Set an alarm for 1 minute from current time
2) Snooze alarm when it goes off
3) Go to Settings -> Date & Time and set the time to 2 minutes ahead
4) The snoozed alarm should be rescheduled to the next day the alarm
   would fire.

Change-Id: Id7e2d5c7b5d2b9d3b92eb51a2e14d70639d56761