Remove extra semicolons, convert #define x() {...} to do {...} while (0) style (#444)

* Remove extra semicolons, convert #define x() {...} to do {...} while (0) style

* Fix missing brace in INIT-specific definition of init_kbd_startup

src/main.c

@@ -304,7 +304,7 @@ int main(int argc, char *argv[])
     perror("Name of executable not found.");
   } else if (dld_init(dld_find_executable(argv[0])) != 0) {
     dld_perror("Can't init DLD.");
-  };
+  }
 #endif /* MAIKO_ENABLE_FOREIGN_FUNCTION_INTERFACE */
 
 #ifdef XWINDOW