Fixed #2181 (How can I select the extension of the files to check?)

lib/filelister.cpp

@@ -68,11 +68,7 @@ bool FileLister::acceptFile(const std::string &filename)
         extension == ".c" ||
         extension == ".c++" ||
         extension == ".tpp" ||
-        extension == ".txx" ||
-        extension == ".m" ||        // Objective C
-        extension == ".mm" ||       // Objective C++
-        extension == ".java" ||     // Java source file
-        extension == ".cs")         // C# source file
+        extension == ".txx")
     {
         return true;
     }

lib/filelister_unix.cpp

@@ -53,7 +53,7 @@ void FileListerUnix::recursiveAddFiles(std::vector<std::string> &filenames, cons
         if (filename[filename.length()-1] != '/')
         {
             // File
-            if (FileLister::acceptFile(filename))
+            if (sameFileName(path,filename) || FileLister::acceptFile(filename))
                 filenames.push_back(filename);
         }
         else