… of vectors

…nto ivf_hkmeans

…minor change from long to int

…ing an array of centroids length

     * pulled dim up to ctor for hkmeans
     * renamed hkmeans function to cluster as verb
     * removed unnecessary sort
     * moved onheap supplier back to base class and removed interface
     * brought back soar lambda as a static constant and wired through where it made sense for now
     * added verification of no duplicate assignments to hkmeans test
     * fixed tests related to slice being null in some cases now

…erface to pass around a IntArrayList[] which reverts and simplifies some of the interfaces, added Ben's diff around simplifying ordinal resolution in hkmeans which greatly simplified a number of things with FFVSlices

…ibilty on intermediate kmeans result class

…Result