src/default_icon.svg, src/default_icon.png: Redo the icons from
	  scratch so we it's not a derivative work from the Tango icons anymore
	  (and thus remove the CCPL).

(Old svn revision: 29005)

	  settings-dialogs/monitor-icon.h: Replace monitor icon with an icon
	  based on the Tango icon theme (Bug #4666), 
	  COPYING: Add the CCPL as some icons are derived work from the 
	  Tango icons.

(Old svn revision: 28983)

(Old svn revision: 10858)

(Old svn revision: 10277)