first pass at removing the C hattrie dependency
use the trie directly
continue working towards a faster quicktree. we are down to 150Mb resident vs 1.5GB from before. Speed seems to be about 0.0174 seconds for on-list and 0.0744 seconds for off-list responses from apokalyptik/gsbd
remove commented out block obviated by trie.Trie.Drop*()