[Biojava-l] infinite alphabets

[Matthew Pocock]

Hi.

I've been tinkering with IntegerAlphabet and DoubleAlphabet with Mark 
Schreiber. We were having some strange bugs and tracked them down to the 
multiple symbols representing the same integer or double. Apparently 
Thomas and I thought it was a good idea for symbols in infinite 
alphabets not to be very clever about ==. Oh, the foolishness of youth.

So - symbols from infinite alpahbets are now cannonicalized. If you get 
the Symbol instance for 365 from IntegerAlphabet seven times, you will 
get the same object 7 times. This makes life much easer for things like 
probabilities over integer ranges.

One more inconsistency squashed ;-)

Matthew