XD-664 file has .out suffix by default
Fix file sink module's file name suffix for the tests
Fix AggregateCounter shell command option handling
Fix generics in XDController
Remove restriction on setting alpha more than once.

It should be OK to change the smoothing parameter once a
rich gauge is already in use.
XD-561A Application now supports named channels while declaring module types.
BugFixes and code review updates.