Increased maximum number of timers to 64;

Redid some things in serial_old.c;
Made win_serial.c only compile and link if make is started with WALTJE=y;
The NVR path text box in the Settings dialog now has ES_AUTOHSCROLL set.

src/WIN/86Box.rc

@@ -255,7 +255,7 @@ BEGIN
                     12,12
     LTEXT           "MB",IDT_1705,123,64,10,10
     LTEXT           "Memory:",IDT_1706,7,64,30,10
-    LTEXT           "NVR Path:",IDT_1700,7,83,60,10
+    LTEXT           "NVR Path:",IDT_1700,7,83,60,10,ES_AUTOHSCROLL
     EDITTEXT        IDC_EDIT_NVR_PATH,71,82,138,12
     PUSHBUTTON      "&Specify...",IDC_BUTTON_NVR_PATH,214,82,46,12
     CONTROL         "Dynamic Recompiler",IDC_CHECK_DYNAREC,"Button",