Bumped Netty to 4.0.18.Final
Bumped Netty to 4.0.18.Final

See: http://netty.io/news/2014/04/01/4-0-18-Final.html
JAVA-1155

jyemin/mongo-java-driver,jsonking/mongo-java-driver,gianpaj/mongo-java-driver,rozza/mongo-java-driver,PSCGroup/mongo-java-driver,jsonking/mongo-java-driver,rozza/mongo-java-driver,kay-kim/mongo-java-driver,jyemin/mongo-java-driver