NUTCH-1857 readb -dump -format csv should use comma

git-svn-id: https://svn.apache.org/repos/asf/nutch/trunk@1628329 13f79535-47bb-0310-9956-ffa450edef68
NUTCH-1866 ant eclipse target should not delete runtime

git-svn-id: https://svn.apache.org/repos/asf/nutch/trunk@1628783 13f79535-47bb-0310-9956-ffa450edef68