HADOOP-11428. Remove obsolete reference to Cygwin in BUILDING.txt. Contributed by Arpit Agarwal.
HDFS-7530. Allow renaming of encryption zone roots. Contributed by Charles Lamb.

(cherry picked from commit b0b9084433d5e80131429e6e76858b099deb2dda)
HDFS-7431. log message for InvalidMagicNumberException may be incorrect. Contributed by Yi Liu.

(cherry picked from commit 5df7ecb33ab24de903f0fd98e2a055164874def5)
YARN-2964. RM prematurely cancels tokens for jobs that submit jobs (oozie). Contributed by Jian He
(cherry picked from commit 0402bada1989258ecbfdc437cb339322a1f55a97)
HADOOP-11431. Clean up redundant maven-site-plugin configuration. Contributed by Herve	Boutemy.