Revert "Hopefully made learner a bit better"

This reverts commit a74225472561cdb89efc28235679f78e68b2388a.

Conflicts:

	src/learner.c
Added message dumping for both directions
Fixed fbr_ev_wait usage to match new libevfibers api
Now proposer reads all data in buffers, not one message
Added Tokyo Cabinet storage module
Some formatting adjustments
Fixed logging of messages (typo)
Commented out value dump on client side
Dropped google profiler flags and stuff

I've switched to non-obtrusive perf and oprofile.