ENH: remove cerr calls

Source/cmListFileCache.cxx

@@ -128,7 +128,6 @@ bool cmListFileCache::CacheFile(const char* path, bool requireProjectCommand)
       project.m_Name = "PROJECT";
       project.m_Arguments.push_back("Project");
       inFile.m_Functions.push_back(project);
-      std::cerr << "adding project command to file " << path << "\n";
       }
     }
   m_ListFileCache[path] = inFile;

Source/cmMakefile.cxx

@@ -321,7 +321,6 @@ bool cmMakefile::ReadListFile(const char* filename, const char* external)
          cmSystemTools::GetFilenameName(filename)) == "cmakelists.txt")
       {
       requireProjectCommand = true;
-      std::cerr << "Require project command " << filename << "\n";
       }
     }