cmLocalGenerator: Add abstraction to check if top-level.

Move from the cmLocalNinjaGenerator.  Fix the case of the name.

Source/cmLocalGenerator.cxx

@@ -77,6 +77,11 @@ cmLocalGenerator::~cmLocalGenerator()
   delete this->Makefile;
 }
 
+bool cmLocalGenerator::IsRootMakefile() const
+{
+  return !this->GetParent();
+}
+
 //----------------------------------------------------------------------------
 class cmLocalGeneratorCurrent
 {

Source/cmLocalGenerator.h

@@ -37,6 +37,9 @@ public:
   cmLocalGenerator(cmGlobalGenerator* gg, cmLocalGenerator* parent);
   virtual ~cmLocalGenerator();
 
+  /// @return whether we are processing the top CMakeLists.txt file.
+  bool IsRootMakefile() const;
+
   /**
    * Generate the makefile for this directory.
    */

Source/cmLocalNinjaGenerator.cxx

@@ -48,7 +48,7 @@ void cmLocalNinjaGenerator::Generate()
 #endif
 
   // We do that only once for the top CMakeLists.txt file.
-  if(this->isRootMakefile())
+  if(this->IsRootMakefile())
     {
     this->WriteBuildFileTop();
 
@@ -179,11 +179,6 @@ cmake* cmLocalNinjaGenerator::GetCMakeInstance()
   return this->GetGlobalGenerator()->GetCMakeInstance();
 }
 
-bool cmLocalNinjaGenerator::isRootMakefile() const
-{
-  return !this->GetParent();
-}
-
 void cmLocalNinjaGenerator::WriteBuildFileTop()
 {
   // For the build file.
@@ -312,7 +307,7 @@ void cmLocalNinjaGenerator::WriteProcessedMakefile(std::ostream& os)
     << "# Write statements declared in CMakeLists.txt:" << std::endl
     << "# " << this->Makefile->GetCurrentListFile() << std::endl
     ;
-  if(this->isRootMakefile())
+  if(this->IsRootMakefile())
     os << "# Which is the root file." << std::endl;
   cmGlobalNinjaGenerator::WriteDivider(os);
   os << std::endl;

Source/cmLocalNinjaGenerator.h

@@ -59,9 +59,6 @@ public:
   std::string const& GetConfigName() const
   { return this->ConfigName; }
 
-  /// @return whether we are processing the top CMakeLists.txt file.
-  bool isRootMakefile() const;
-
   /// @returns the relative path between the HomeOutputDirectory and this
   /// local generators StartOutputDirectory.
   std::string GetHomeRelativeOutputPath() const