Part of port from lucene3.3.0 to lucene4.7.2. Solr related. Updating webapps/solr.war file from 3.3 to 4.7.2. Updating build.xml file, and the two text files, one listing the source files and the other listing the jar files. Adding new contexts folder for solr4.7.2. Updated test folder with the correct classpath for solr 4.7.2.