- Modify the code so that it doesn't log client disconnects unless debug is on, and...

- Modify the code so that it doesn't log client disconnects unless debug is on, and make behavior in front of
  runtime exceptions more transparent.
- Also, if failing to read or parse parameters doesn't throw an ISE, then a post too large shouldn't be an ISE. Or the
  opposite should be done, but IMO this would be excessive logging.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@488498 13f79535-47bb-0310-9956-ffa450edef68