Added ability to toggle binary flags through the python calls

src/binwalk/core/module.py

@@ -665,7 +665,8 @@ class Modules(object):
     def __exit__(self, t, v, b):
         self.cleanup()
 
-    def _set_arguments(self, argv=[], kargv={}):
+    def _set_arguments(self, argv=None, kargv=None):
+        if kargv:
             for (k, v) in iterator(kargv):
                     k = self._parse_api_opt(k)
                     if v not in [True, False, None]:
@@ -677,6 +678,9 @@ class Modules(object):
                             argv.append(k)
                             argv.append(value)
                     else:
+                        # Only append if the value is True; this allows for toggling values
+                        # by the function call.
+                        if v:
                             argv.append(k)
 
         if not argv and not self.arguments: