NUTCH-1859 Make Nutch webapp port configurable

git-svn-id: https://svn.apache.org/repos/asf/nutch/branches/2.x@1628342 13f79535-47bb-0310-9956-ffa450edef68
NUTCH-1866 ant ecliupse target should not delete runtime

git-svn-id: https://svn.apache.org/repos/asf/nutch/branches/2.x@1628788 13f79535-47bb-0310-9956-ffa450edef68