Fix Multi episodes with same name > 9 episodes

http://sickbeard.com/forums/viewtopic.php?f=4&t=7813

actual episode:
23 - The Resistance (1)
24 - The Resistance (2)
...
32 - The Resistance (10)

linked to a single file:
...0x23-32[SD TV] - The Resistance (1) & The Resistance (2) & ... & The Resistance (10)...

--> incorrect behaviour
It doesn't recognize the 10-part episodes and simply repeats the episode names