discussion of receiver components moved to a separate chapter

The Appenders chapter had become quite long due to the inclusion
of the documentation of Receiver components.
work-in-progress on documenting SSL configuration
added references to chapters on receivers and SSL configuration

Probably want to consider inserting the chapter on receivers
somewhere near the middle...
moved examples of receiver usage from appenders examples
examples of receiver usage

These were previously in the appenders chapter, now moved to the
receivers chapter, and refined a bit to make them a bit easier to
follow.
work in progress on Using SSL chapter of the manual

Added some language to define "server component" and "client component",
fixed some overall formatting problems, lots of minor fixes and improvements,
added examples of using JSSE system properties, added standard footer.
fixed location of server config for SSL example
added myself to those blamed for the manual  :-)
pared down and refined news items for receivers and SSL appenders

Now the focus is on just describing the highlights and deferring
the details to the appropriate chapters of the manual.
corrections to comments in example configs for receiver components