[maven-release-plugin] prepare release lang-6.4.2
[maven-release-plugin] prepare for next development iteration
OHFT-17 updated to     <groupId>net.openhft</groupId>
                                    <artifactId>lang</artifactId>
                                    <version>6.4.2</version>
HCOLL-90 move SHM replication into the live-set