allow more than one external MS project

Source/cmDSPWriter.cxx

@@ -128,7 +128,7 @@ void cmDSPWriter::OutputDSPFile()
     // so don't build a projectfile for it
     if ((l->second.GetType() != cmTarget::INSTALL_FILES)
         && (l->second.GetType() != cmTarget::INSTALL_PROGRAMS)
-        && (l->first != "INCLUDE_EXTERNAL_MSPROJECT"))
+        && (l->first.compare(0,26, "INCLUDE_EXTERNAL_MSPROJECT") != 0))
       {
       this->CreateSingleDSP(l->first.c_str(),l->second);
       }

Source/cmDSWWriter.cxx

@@ -172,7 +172,7 @@ void cmDSWWriter::WriteDSWFile(std::ostream& fout)
           }
         }
       // Write the project into the DSW file
-      if (l->first == "INCLUDE_EXTERNAL_MSPROJECT")
+      if (l->first.compare(0,26, "INCLUDE_EXTERNAL_MSPROJECT") == 0)
       {
         cmCustomCommand cc = l->second.GetCustomCommands()[0];
         

Source/cmIncludeExternalMSProjectCommand.cxx

@@ -25,8 +25,12 @@ bool cmIncludeExternalMSProjectCommand::InitialPass(std::vector<std::string> con
         depends.push_back(args[i]); 
       }
     }
+
+    std::string utility_name("INCLUDE_EXTERNAL_MSPROJECT");
+    utility_name += "_";
+    utility_name += args[0];
 
-    m_Makefile->AddUtilityCommand("INCLUDE_EXTERNAL_MSPROJECT", "echo", "\"Include external project\"",
+    m_Makefile->AddUtilityCommand(utility_name.c_str(), "echo", "\"Include external project\"",
                                   false, name_and_location, depends);
 
   }