Add a weak_etag field to the calendar_attendee table.

dba/davical.sql

@@ -389,6 +389,7 @@ CREATE TABLE calendar_attendee (
   rsvp BOOLEAN,
   property TEXT, -- The full text of the property
   attendee_state TEXT, -- Internal DAViCal processing state
+  weak_etag TEXT, -- The week_etag applying for this attendee state
   PRIMARY KEY ( dav_id, attendee )
 );
 

dba/patches/1.2.9.sql

@@ -31,6 +31,7 @@ ALTER TABLE calendar_alarm ADD COLUMN trigger_state CHAR DEFAULT 'N';
 
 -- Internal DAViCal calendar state
 ALTER TABLE calendar_attendee ADD COLUMN attendee_state TEXT;
+ALTER TABLE calendar_attendee ADD COLUMN weak_etag TEXT;
 
 SELECT new_db_revision(1,2,9, 'Septembre' );