MXS-463: Filepaths are now properly formatted for printing

The various global directory setter functions now process the input they receive
and remove redundant and trailing forward slashes from the directory paths.

server/include/gw.h

@@ -89,4 +89,5 @@ int  parse_bindconfig(char *, unsigned short, struct sockaddr_in *);
 int setipaddress(struct in_addr *, char *);
 char* get_libdir();
 long get_processor_count();
+void clean_up_pathname(char *path);
 #endif