rhymeEncode should not collapse LL at word ends

[borgar]

The words kalla (men) and kalla (call) don't rhyme. Whether to pronounce the L's as hard or soft can't be known without knowing which word it is and this is impossible without context. Thus the dictionary just treats L and LL the same.

This, however, is wrong at the ends of words: Words ending in LL (kall, mall, sall) will always be pronounced hard and those ending in L (kal, mal, sal) will always be soft.

Now, let's fix this.