CPack: Avoid member shadowing after API refactor

After converting method arguments to members we need to avoid use of the
same names as local variables and other method arguments.

Source/CPack/cmCPackBundleGenerator.cxx

@@ -165,5 +165,5 @@ int cmCPackBundleGenerator::PackageFiles()
     cmSystemTools::SetPermissions(command_target.str().c_str(), 0777);
     }
 
-  return this->CreateDMG(toplevel.c_str(), packageFileNames[0].c_str());
+  return this->CreateDMG();
 }

Source/CPack/cmCPackDragNDropGenerator.cxx

@@ -107,7 +107,7 @@ const char* cmCPackDragNDropGenerator::GetOutputExtension()
 int cmCPackDragNDropGenerator::PackageFiles()
 {
 
-  return this->CreateDMG(toplevel, packageFileNames[0]);
+  return this->CreateDMG();
 }
 
 //----------------------------------------------------------------------
@@ -159,8 +159,7 @@ bool cmCPackDragNDropGenerator::RunCommand(cmOStringStream& command,
 }
 
 //----------------------------------------------------------------------
-int cmCPackDragNDropGenerator::CreateDMG(const std::string& toplevel,
-  const std::string& outFileName)
+int cmCPackDragNDropGenerator::CreateDMG()
 {
   // Get optional arguments ...
   const std::string cpack_package_icon = this->GetOption("CPACK_PACKAGE_ICON") 
@@ -473,7 +472,7 @@ int cmCPackDragNDropGenerator::CreateDMG(const std::string& toplevel,
   final_image_command << cpack_dmg_format;
   final_image_command << " -imagekey";
   final_image_command << " zlib-level=9";
-  final_image_command << " -o \"" << outFileName << "\"";
+  final_image_command << " -o \"" << packageFileNames[0] << "\"";
   
   if(!this->RunCommand(final_image_command))
     {

Source/CPack/cmCPackDragNDropGenerator.h

@@ -34,8 +34,7 @@ protected:
   bool CopyFile(cmOStringStream& source, cmOStringStream& target);
   bool RunCommand(cmOStringStream& command, std::string* output = 0);
 
-  virtual int CreateDMG(const std::string& installdir,
-    const std::string& outdmg);
+  int CreateDMG();
 
   std::string InstallPrefix;
 };

Source/CPack/cmCPackGenerator.cxx

@@ -331,13 +331,13 @@ int cmCPackGenerator::InstallProjectViaInstalledDirectories(
       {
       cmCPackLogger(cmCPackLog::LOG_DEBUG, "Find files" << std::endl);
       cmsys::Glob gl;
-      std::string toplevel = it->c_str();
+      std::string top = it->c_str();
       it ++;
       std::string subdir = it->c_str();
-      std::string findExpr = toplevel;
+      std::string findExpr = top;
       findExpr += "/*";
       cmCPackLogger(cmCPackLog::LOG_OUTPUT,
-        "- Install directory: " << toplevel << std::endl);
+        "- Install directory: " << top << std::endl);
       gl.RecurseOn();
       if ( !gl.FindFiles(findExpr) )
         {
@@ -369,7 +369,7 @@ int cmCPackGenerator::InstallProjectViaInstalledDirectories(
           }
         std::string filePath = tempDir;
         filePath += "/" + subdir + "/"
-          + cmSystemTools::RelativePath(toplevel.c_str(), gfit->c_str());
+          + cmSystemTools::RelativePath(top.c_str(), gfit->c_str());
         cmCPackLogger(cmCPackLog::LOG_DEBUG, "Copy file: "
           << inFile.c_str() << " -> " << filePath.c_str() << std::endl);
         if ( !cmSystemTools::CopyFileIfDifferent(inFile.c_str(),