Switch log4j version to 2.0-rc1
Switch log4j version to 2.0-rc1

yangzhongj/mina,weijiangzhu/mina,apache/mina,weijiangzhu/mina,yangzhongj/mina,universsky/mina,apache/mina,Vicky01200059/mina,universsky/mina,mway08/mina,mway08/mina,Vicky01200059/mina,dongjiaqiang/mina,dongjiaqiang/mina