Tentative process_radtags fix for file names with . in them

src/sequence_file.cpp

@@ -27,7 +27,13 @@ std::vector<InputFile> get_input_files(const std::string& input_dir_path) {
 
         current_file = dir_content->d_name;
         split_name = split(current_file, ".");
+        size_t s = split_name.size();
         extension = "";
+        if (s > 2) {
+            extension += split_name[s-1] + "." + split_name[s - 2];
+        } else if (s == 2) {
+            extension = "." + split_name[1];
+        }
 
         // Careful: this will fail if the file name contains "." ... TODO: solve this problem
         for (uint i=1; i<split_name.size(); ++i) extension += "." + split_name[i];