Updated building instructions: added Windows native module and raised minimal Java to 1.6
Updated building instructions: added Windows native module and raised minimal Java to 1.6

git-svn-id: 897293da6115b9493049ecf64199cf2f9a0ac287@1604774 13f79535-47bb-0310-9956-ffa450edef68

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