FLUME-2081. JMX metrics support for SpoolDir.

(Sravya Tirukkovalur via Mike Percy)
FLUME-2082. JMX support for Seq Generator Source.

(Sravya Tirukkovalur via Mike Percy)
FLUME-2051. Surefire 2.12 cannot run a single test on Windows. Upgrade to 2.12.3.

(Roshan Naik via Mike Percy)
FLUME-1924. Bug in serializer context parsing in RollingFileSink

(Mike Percy via Hari Shreedharan)
FLUME-1975. Use TThreadedSelectServer in ThriftSource if it is available.

(Hari Shreedharan via Mike Percy)
FLUME-2049. Compile ElasticSearchSink with elasticsearch 0.90.

(Edward Sargisson via Mike Percy)