* symfile.c: If O_BINARY isn't defined, set it to 0, call openp for

binary files oring in the right bit.

	* main.c, source.c, state.c, symmisc.c: use macros defined in
	fopen-{bin|both} when fopening files.

	* remote-hms.c, remote-sim.c: lint

gdb/remote-hms.c

@@ -622,14 +622,13 @@ static void
 hms_close (quitting)
      int quitting;
 {
-
   /* Clear any break points */
   hms_clear_breakpoints ();
-
-  /* Put this port back into REMOTE mode */
   sleep (1);			/* Let any output make it all the way back */
-  serial_write ("R\r", 2);
-  serial_close ();
+  if (is_open) {
+    serial_write ("R\r", 2);
+    serial_close ();
+  }
   is_open = 0;
 }