Update copyright.

git-svn-id: https://svn.apache.org/repos/asf/xalan/java/branches/xalan-j_2_7_1_maint@1581584 13f79535-47bb-0310-9956-ffa450edef68
Prepare 2.7.2 docs.

git-svn-id: https://svn.apache.org/repos/asf/xalan/java/branches/xalan-j_2_7_1_maint@1581585 13f79535-47bb-0310-9956-ffa450edef68