build.xml: Fixed check for existing private.key, added check for non existing release in target sign and changed the include filenames for changed libs
Added log4j.properties file to eliminate the warning about a not initialized log4j subsystem with parameters for one console appender
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6998 6c8d7289-2bf4-0310-a012-ef5d649a1542