NUTCH-1666 Optimisation for BasicURLNormalizer (jnioche)

git-svn-id: https://svn.apache.org/repos/asf/nutch/trunk@1540654 13f79535-47bb-0310-9956-ffa450edef68
NUTCH-1100 avoid NPE in SOLRDedup

git-svn-id: https://svn.apache.org/repos/asf/nutch/trunk@1540758 13f79535-47bb-0310-9956-ffa450edef68