Upgraded to Spring 4.0.5, Hibernate 4.3.5, Logback 1.1.2, and slf4j
1.7.7.  Added a logfile beneath $CATALINA_BASE/logs. Made webapps
directory relative to $CATALINA_BASE/webapps. Updated bean definitions
to use Spring 3.2 schemas.  Added /.settings/ to the list of ingorable
files.