Upgrade to the 2014-01-08 version of AWS DynamoDB Local

Hello @giannic, 

Please review the following commits I made in branch 'xiao-upgrade'.

ca5de032af362a0fc946a89e806549f83dc747b8 (2014-02-21 15:11:20 -0800)
Upgrade to the 2014-01-08 version of AWS DynamoDB Local

R=@giannic