<!-- ##### SECTION Title ##### --> Files <!-- ##### SECTION Short_Description ##### --> File utility functions. <!-- ##### SECTION Long_Description ##### --> <para> Portable utility functions for handling files. </para> <!-- ##### SECTION See_Also ##### --> <para> </para> <!-- ##### SECTION Stability_Level ##### --> <!-- ##### FUNCTION librdf_files_temporary_file_name ##### --> <para> </para> @Returns: