8153933: Remove intermittent key from TimeZone/Bug6772689.java and move back to tier1
Reviewed-by: darcy

8151798: Mark java/util/TimeZone/Bug6772689.java as intermittently failing and demote to tier2
Reviewed-by: lancea

6772689: java.sql.Date.valueOf("2042-10-xx").toString() wrong in some time zones
Reviewed-by: peytoia