Refresh feature

 o With these changes kdesk creates an object window to receive signals
   and provides a SIGUSR1 to raise a break in the processing loop
   so that the configuration and icons are reloaded dynamically.

 o It needs an extra feature by which the object window is contacted
   directly to send an event so we can send this message from
   unrelated processes - different adress spaces.
Merge branch 'master' into refresh

Conflicts:
	src/main.cpp