Improve output: distinguish between failed assertions (failures) and unexpected exceptions (errors), and print a filtered stack trace for any exception.

webapp/lib/README.txt

@@ -0,0 +1,15 @@
+notes about jar files in lib dir:
+
+commons-pool-1.2.jar - for connection pools and dbcp
+commons-collections-3.1.jar - for commons-pool-1.2.jar
+These previous two jars were not in the lib directory because
+we had been putting them in tomcat/common/lib for the
+server.xml database connection.
+
+cos.jar 
+com.oreilly.servlet.* classes. Many different utilities for
+servlets from http://servlets.com/cos/
+There is a set of file upload tools, an email utility, a cache,
+a base64 encode/decode, a parameter parser.
+
+updated by bdc who need ServletUtils.