Fix v8 shared library build by wrapping SourceGroup dtor into an ifndef V8_SHARED check.

src/d8.h

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 109 matching lines @@
   SourceGroup() :
 #ifndef V8_SHARED
       next_semaphore_(v8::internal::OS::CreateSemaphore(0)),
       done_semaphore_(v8::internal::OS::CreateSemaphore(0)),
       thread_(NULL),
 #endif  // V8_SHARED
       argv_(NULL),
       begin_offset_(0),
       end_offset_(0) {}
 
+#ifndef V8_SHARED
   ~SourceGroup();
+#endif
 
   void Begin(char** argv, int offset) {
     argv_ = const_cast<const char**>(argv);
     begin_offset_ = offset;
   }
 
   void End(int offset) { end_offset_ = offset; }
 
   void Execute();
 
@@ skipping 211 matching lines @@
   LineEditor* next_;
   static LineEditor* first_;
 };
 #endif  // V8_SHARED
 
 
 }  // namespace v8
 
 
 #endif  // V8_D8_H_