HADOOP-9437. TestNativeIO#testRenameTo fails on Windows due to assumption that POSIX errno is embedded in NativeIOException. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1466306 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd