vold: Remove autorun.inf at mount/unmount time if it exists

Change-Id: Ia57da8ee177453a601a23d965c2b4f16b6de46e5
Signed-off-by: San Mehat <san@google.com>
diff --git a/Volume.h b/Volume.h
index e756160..290b66d 100644
--- a/Volume.h
+++ b/Volume.h
@@ -87,6 +87,7 @@
     int createBindMounts();
     int doUnmount(const char *path, bool force);
     int doMoveMount(const char *src, const char *dst, bool force);
+    void protectFromAutorunStupidity();
 };
 
 typedef android::List<Volume *> VolumeCollection;