Undefine local preprocessor loop variables.

Most occurances of this pattern already contain the undef, so add it to
the rest too.

Source/cmExportTryCompileFileGenerator.cxx

@@ -36,6 +36,8 @@ bool cmExportTryCompileFileGenerator::GenerateMainFile(std::ostream& os)
 
       CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(FIND_TARGETS)
 
+#undef FIND_TARGETS
+
       this->PopulateProperties(te, properties, emittedDeps);
 
       this->GenerateInterfaceProperties(te, os, properties);

Source/cmGeneratorExpressionDAGChecker.cxx

@@ -40,6 +40,7 @@ cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
       CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(TEST_TRANSITIVE_PROPERTY_METHOD)
       false)
      )
+#undef TEST_TRANSITIVE_PROPERTY_METHOD
     {
     std::map<cmStdString, std::set<cmStdString> >::const_iterator it
                                                     = top->Seen.find(target);

Source/cmGeneratorExpressionDAGChecker.h

@@ -58,6 +58,8 @@ struct cmGeneratorExpressionDAGChecker
 
   CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(DECLARE_TRANSITIVE_PROPERTY_METHOD)
 
+#undef DECLARE_TRANSITIVE_PROPERTY_METHOD
+
   bool GetTransitivePropertiesOnly();
   void SetTransitivePropertiesOnly()
     { this->TransitivePropertiesOnly = true; }

Source/cmGeneratorExpressionEvaluator.cxx

@@ -772,6 +772,8 @@ static const char* targetPropertyTransitiveWhitelist[] = {
   CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(TRANSITIVE_PROPERTY_NAME)
 };
 
+#undef TRANSITIVE_PROPERTY_NAME
+
 std::string getLinkedTargetsContent(const std::vector<std::string> &libraries,
                                   cmTarget const* target,
                                   cmTarget const* headTarget,
@@ -999,6 +1001,7 @@ static const struct TargetPropertyNode : public cmGeneratorExpressionNode
                                             ASSERT_TRANSITIVE_PROPERTY_METHOD)
           false);
         }
+#undef ASSERT_TRANSITIVE_PROPERTY_METHOD
       }
 
     std::string linkedTargetsContent;