Fix DISCL-242 - Concurrency issues in MasterToWallChannel

Change-Id: I4ebee170ec06bed730e9287e42bed81a3fa8b8b1
Merge pull request #117 from rdumusc/DISCL-242

Fix DISCL-242 - Concurrency issues in MasterToWallChannel
Update release notes for 2014.R3

Change-Id: I91d2b2b3fc390f2aff06648be990438e8e0cb52f