wgint file_size PARAMS ((const char *));
int make_directory PARAMS ((const char *));
char *unique_name PARAMS ((const char *, int));
+FILE *unique_create PARAMS ((const char *, int, char **));
+FILE *fopen_excl PARAMS ((const char *, int));
char *file_merge PARAMS ((const char *, const char *));
int acceptable PARAMS ((const char *));