CONFIGFILE: Added BACKUP and RESTART to SAVE_CONFIG

https://github.com/Klipper3d/klipper/pull/4515/files

klippy/configfile.py

@@ -416,6 +416,7 @@ class PrinterConfig:
             f = open(temp_name, 'w')
             f.write(data)
             f.close()
+            if gcmd.get_int('BACKUP', 1):
                 os.rename(cfgname, backup_name)
             os.rename(temp_name, cfgname)
         except:
@@ -423,4 +424,5 @@ class PrinterConfig:
             logging.exception(msg)
             raise gcode.error(msg)
         # Request a restart
+        if gcmd.get_int('RESTART', 1):
             gcode.request_restart('restart')