[cdt-patch] Update for launch icons

[Thomas Fletcher <ThomasF@xxxxxxx>]

Since Dave is away on vacation, I thought I would liven up his return
a bit with a few icons.  I've just commited the base set of launch
icons and enabled the class which was designed to manage them.

No interface changes performed, just filling in what was missing.  Your
launch configurations should now be updated with colour and life.  New
icons (or suggestions) welcome.  These were mostly taken from elsewhere
in Eclipse (ie arguments, source attachment etc).

I love CDT,
  Thomas