Linux/FreeBSD: Add CLI switch to force use of old sudo behavior of sending a dummy password

The new switch is --use-dummy-sudo-password

src/Core/CoreBase.h

@@ -77,6 +77,10 @@ namespace VeraCrypt
 		virtual void SetFileOwner (const FilesystemPath &path, const UserId &owner) const = 0;
 		virtual DirectoryPath SlotNumberToMountPoint (VolumeSlotNumber slotNumber) const = 0;
 		virtual void WipePasswordCache () const = 0;
+#if defined(TC_LINUX ) || defined (TC_FREEBSD)
+		virtual void ForceUseDummySudoPassword (bool useDummySudoPassword) { UseDummySudoPassword = useDummySudoPassword;}
+		virtual bool GetUseDummySudoPassword () const { return UseDummySudoPassword;}
+#endif
 
 		Event VolumeDismountedEvent;
 		Event VolumeMountedEvent;
@@ -87,6 +91,9 @@ namespace VeraCrypt
 
 		bool DeviceChangeInProgress;
 		FilePath ApplicationExecutablePath;
+#if defined(TC_LINUX ) || defined (TC_FREEBSD)
+		bool UseDummySudoPassword;
+#endif
 
 	private:
 		CoreBase (const CoreBase &);