Add remote client address to message properties

• User impact:

  Low
• Similar Issues:

  None

Currently, when an exception is raised when processing a message from an http client, information accompanying the exception stacktrace does not include the address of the client. This complicates troubleshooting. A patch similar to that mentioned at http://mule.mulesource.org/display/MULE/mail/5571095 should solve this problem. The mail concerned talks about patching the tcp implementation in Mule.