Factor out duplicate VS target dependency code

Compute VS target dependencies in cmGlobalVisualStudioGenerator when the
main global dependency analysis is done.  Use these results in each of
the VS generators instead of duplicating the analysis.

Source/cmGlobalVisualStudioGenerator.cxx

@@ -352,6 +352,64 @@ cmGlobalVisualStudioGenerator::CreateUtilityDependTarget(cmTarget& target)
     }
 }
 
+//----------------------------------------------------------------------------
+bool cmGlobalVisualStudioGenerator::ComputeTargetDepends()
+{
+  if(!this->cmGlobalGenerator::ComputeTargetDepends())
+    {
+    return false;
+    }
+  std::map<cmStdString, std::vector<cmLocalGenerator*> >::iterator it;
+  for(it = this->ProjectMap.begin(); it!= this->ProjectMap.end(); ++it)
+    {
+    std::vector<cmLocalGenerator*>& gen = it->second;
+    for(std::vector<cmLocalGenerator*>::iterator i = gen.begin();
+        i != gen.end(); ++i)
+      {
+      cmTargets& targets = (*i)->GetMakefile()->GetTargets();
+      for(cmTargets::iterator ti = targets.begin();
+          ti != targets.end(); ++ti)
+        {
+        this->ComputeVSTargetDepends(ti->second);
+        }
+      }
+    }
+  return true;
+}
+
+//----------------------------------------------------------------------------
+void cmGlobalVisualStudioGenerator::ComputeVSTargetDepends(cmTarget& target)
+{
+  if(this->VSTargetDepends.find(&target) != this->VSTargetDepends.end())
+    {
+    return;
+    }
+  VSDependSet& vsTargetDepend = this->VSTargetDepends[&target];
+  if(target.GetType() != cmTarget::STATIC_LIBRARY)
+    {
+    cmTarget::LinkLibraryVectorType const& libs = target.GetLinkLibraries();
+    for(cmTarget::LinkLibraryVectorType::const_iterator j = libs.begin();
+        j != libs.end(); ++j)
+      {
+      if(j->first != target.GetName() &&
+         this->FindTarget(0, j->first.c_str()))
+        {
+        vsTargetDepend.insert(j->first);
+        }
+      }
+    }
+  std::set<cmStdString> const& utils = target.GetUtilities();
+  for(std::set<cmStdString>::const_iterator i = utils.begin();
+      i != utils.end(); ++i)
+    {
+    if(*i != target.GetName())
+      {
+      std::string name = this->GetUtilityForTarget(target, i->c_str());
+      vsTargetDepend.insert(name);
+      }
+    }
+}
+
 //----------------------------------------------------------------------------
 bool cmGlobalVisualStudioGenerator::CheckTargetLinks(cmTarget& target,
                                                      const char* name)