BetterIntMap toString. Fixes #145

git-svn-id: http://kryo.googlecode.com/svn/trunk@424 a9660ef0-a895-11de-8ba5-91705c1537ed
Bad import!

git-svn-id: http://kryo.googlecode.com/svn/trunk@425 a9660ef0-a895-11de-8ba5-91705c1537ed