Update JUnit from 4.11 to 4.12.
Update JUnit from 4.11 to 4.12.

git-svn-id: 897293da6115b9493049ecf64199cf2f9a0ac287@1697595 13f79535-47bb-0310-9956-ffa450edef68

UlrichColby/httpcomponents-client,ok2c/httpclient,apache/httpcomponents-client