1.6.5.2.1

Update release for 1.6.5

• Due:17/Mar/11

• MB-3496 2011-03-08T21-34 23/Jul/12 memcached crashed - race condition on closing connection
• MB-3440 2011-02-16T12-55 10/Apr/12 vbucketmigrator exits
• MB-3513 2011-03-15T13-09 21/Mar/11 Enable named tap for vbucket migrator