Now even smaller!  Mapping array isn't allocated until a mapping is added, so empty SmallMaps only require one object rather than two.
Now even smaller!  Mapping array isn't allocated until a mapping
is added, so empty SmallMaps only require one object rather than
two.


git-svn-id: ed25c26de1c5325e8eb0deed0b990ab8af8a4def@3129 7c6358e6-4a41-0410-a743-a5b2a554c398

sbliven/biojava,sbliven/biojava,sbliven/biojava