WIP first steps to runtime pickler registry
Logic added to GenPickler to check cache
Caching both runtime picklers and unpicklers
Progress rewriting runtime picklers (unfortunately necessary)
Progress rewriting runtime picklers (unfortunately necessary) pt 2
Fix a bug that caused a test failure
Adds a bunch of runtime tests
Oops, gets rid of diagnostic printlns in runtime tests
Adds primitive pickler/unpickler for Unit to all formats, addresses review feedback
Added binary runtime spec
More tests and clean-ups in runtime-spec
Getting rid of unnecessary hybrid object that was used for experimenting
Revert some unintended changes
Cache static field class in default runtime pickling logic
Merge pull request #154 from scala/0.9.x-runtime-pickler-registry

Runtime pickler registry