Fix staging and build on FreeBSD
Fix staging and build on FreeBSD

Make sure that the filesystem outside of DESTDIR isn't touched,
hence set java.util.prefs.userRoot to $(HOME) and make sure etc/
config files go to $(sysconfdir)/etc/opentsdb instead of
$(pkgdatadir)/etc/opentsdb.

Signed-off-by: Chris Larsen <83037b211e1d109d6858769a113e269c3139ffd3@yahoo-inc.com>

OpenTSDB/opentsdb,eswdd/opentsdb,MadDogTechnology/opentsdb,MadDogTechnology/opentsdb,MadDogTechnology/opentsdb,eswdd/opentsdb,alienth/opentsdb,alienth/opentsdb,OpenTSDB/opentsdb,OpenTSDB/opentsdb