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

native_client_sdk/src/examples/dlopen/example.dsc

 {
   'TOOLS': ['glibc'],
   'TARGETS': [
     {
       'NAME': 'dlopen',
       'TYPE': 'main',
       'SOURCES': ['dlopen.cc'],
       'LIBS': ['nacl_io', 'dl', 'ppapi_cpp', 'ppapi', 'pthread']
     },
     {
       'NAME' : 'libeightball',
       'TYPE' : 'so',
       'SOURCES' : ['eightball.cc', 'eightball.h'],
       'CXXFLAGS': ['-fPIC'],
       'LIBS' : ['ppapi_cpp', 'ppapi', 'pthread']
     },
     {
       'NAME' : 'libreverse',
-      'TYPE' : 'so',
+      # This .so file is manually loaded by dlopen; we don't want to include it
+      # in the .nmf, or it will be automatically loaded on startup.
+      'TYPE' : 'so-standalone',
       'SOURCES' : ['reverse.cc', 'reverse.h'],
       'CXXFLAGS': ['-fPIC'],
       'LIBS' : ['ppapi_cpp', 'ppapi', 'pthread']
     }
   ],
   'DATA': [
     'example.js',
   ],
   'DEST': 'examples',
   'NAME': 'dlopen',
   'TITLE': 'Dynamic Library Open',
-  'DESC': """
-The dlopen example demonstrates how build dynamic libraries and then
-open and use them at runtime.  When the page loads, type in a question and
-hit enter or click the ASK! button.  The question and answer will be
-displayed in the page under the text entry box.  Shared libraries are only
-available with the GLIBC toolchain.""",
-  'FOCUS': 'Using shared objects.',
   'GROUP': 'Concepts'
 }