ETCH-214: Implementation of EtchMailboxManager

EtchMailboxManager Implementation

Change-Id: I2022932d3437255968b4b3e44c50ab928657a6ec

git-svn-id: https://svn.apache.org/repos/asf/incubator/etch/trunk@1368503 13f79535-47bb-0310-9956-ffa450edef68
10 files changed