Increase the maximum MIDI device count, to bring it in line with vanilla Pd.

pd/src/s_midi.c

@@ -486,8 +486,8 @@ void sys_pollmidiqueue( void)
 
 /******************** dialog window and device listing ********************/
 
-#define MAXNDEV 20
-#define DEVDESCSIZE 80
+#define MAXNDEV 128
+#define DEVDESCSIZE 1024
 
 #define DEVONSET 1  /* To agree with command line flags, normally start at 1 */