extern uschar * string_copy_function(const uschar *);
extern uschar * string_copyn_function(const uschar *, int n);
extern uschar * string_copy_taint_function(const uschar *, BOOL tainted);
extern pid_t child_open_exim_function(int *, const uschar *);
extern pid_t child_open_exim2_function(int *, uschar *, uschar *, const uschar *);
extern uschar * string_copy_function(const uschar *);
extern uschar * string_copyn_function(const uschar *, int n);
extern uschar * string_copy_taint_function(const uschar *, BOOL tainted);
extern pid_t child_open_exim_function(int *, const uschar *);
extern pid_t child_open_exim2_function(int *, uschar *, uschar *, const uschar *);