Auto-update Events.hasAlarm

The "hasAlarm" column in the Events table is supposed to be read-only
for applications, updated automatically by the provider as reminders
are added and deleted.  This wasn't implemented (the Calendar app was
doing it manually).

Bug 5424486

Change-Id: Id4d167fe081b77fbd514b9a700359fd84d9e43e8
2 files changed