HADOOP-9488. FileUtil#createJarWithClassPath only substitutes environment variables from current process environment/does not support overriding when launching new process (Chris Nauroth via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1469996 13f79535-47bb-0310-9956-ffa450edef68
YARN-593. container launch on Windows does not correctly populate classpath with new process's environment variables and localized resources (Chris Nauroth via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1469998 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4987. TestMRJobs#testDistributedCache fails on Windows due to classpath problems and unexpected behavior of symlinks (Chris Nauroth via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1470003 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-274-trunk-gd