FLUME-1686. Exclude target directories & Eclipse files from rat checks.

(Roshan Naik and Edward Sargisson via Mike Percy)
FLUME-1822. Update javadoc for FlumeConfiguration.

(Hari Shreedharan via Mike Percy)
FLUME-1932. no-reload-conf command line param does not work.

(Hari Shreedharan via Mike Percy)