- fix makefile to compute dependency info as a side-effect of compilation (-MF)
- investigate 16 byte CAS; ht can store GUIDs inline instead of pointers to actual keys
- test ht
-- optimize tracing code, still too much overhead
++ optimize tracing code, still too much overhead
++ use NULL instead of a sentinal node in skiplist and list
+- make interfaces for all data structures consistent
+- make list and skiplist use string keys