[NaCl SDK] Make the SDK examples buildable as a packaged app.

native_client_sdk/src/examples/geturl/example.dsc

 {
   'TOOLS': ['newlib', 'glibc', 'pnacl', 'win', 'linux'],
   'TARGETS': [
     {
       'NAME' : 'geturl',
       'TYPE' : 'main',
       'SOURCES' : ['geturl.cc', 'geturl_handler.cc', 'geturl_handler.h'],
       'LIBS': ['ppapi_cpp', 'ppapi', 'pthread']
     }
   ],
   'DATA': [
     'example.js',
     'geturl_success.html',
   ],
   'DEST': 'examples',
   'NAME': 'geturl',
   'TITLE': 'Get URL',
-  'DESC': """
-The Get URL example demonstrates fetching an URL and then displaying
-its contents.  Clicking the GetURL button will cause a geturl_success.html
-file to get loaded asynchronously, then displayed in a text box when the
-load completes.""",
-  'FOCUS': 'URL loading.',
   'GROUP': 'API'
 }