Fixed: sample shell with shared lib fails to compile.

samples/shell.cc

Index: samples/shell.cc
diff --git a/samples/shell.cc b/samples/shell.cc
index 3c78ea4cb4366746cb24f0442fd34ea76220b9c1..f37e731f389d6ebffdf63f759ea4a51e227c1848 100644
--- a/samples/shell.cc
+++ b/samples/shell.cc
@@ -95,10 +95,12 @@ class SourceGroup {
                   begin_offset_(0),
                   end_offset_(0) { }
 
+#if !(defined(USING_V8_SHARED) || defined(V8_SHARED))

[Yang, 2011/07/14 09:36:27]

Those semaphores are not defined when USING_V8_SHARED or V8_SHARED and cause
compile errors when library=shared

   ~SourceGroup() {
     delete next_semaphore_;
     delete done_semaphore_;
   }
+#endif  // USING_V8_SHARED
 
   void Begin(char** argv, int offset) {
     argv_ = const_cast<const char**>(argv);