Add a Copyright and LGPL notice to urlgrabber-ext-down
Add a Copyright and LGPL notice to urlgrabber-ext-down

henrysher/urlgrabber,henrysher/urlgrabber,henrysher/urlgrabber,tradej/urlgrabber,tradej/urlgrabber,Distrotech/urlgrabber,oe-lite/urlgrabber,oe-lite/urlgrabber,Distrotech/urlgrabber,henrysher/urlgrabber,tradej/urlgrabber,Distrotech/urlgrabber,oe-lite/urlgrabber,Distrotech/urlgrabber,oe-lite/urlgrabber