add no read-my-own-writes support. actually slows things down to not read-my-own-writes (at least in a increment-heavy workload)
Read my own writes
Use stable_sort, no separate copy, hopefully allow not reading own writes
fix warnings
only do stable_sort if they've done a non read-my-write. slight speedup
add more checks for readMyWritesOnly_ and make it actually work.
fairly minor speedup but it seems like there is something of a speedup for when READ_MY_WRITES is on
Merge branch 'no_rmyw'

Conflicts:
	Transaction.hh
	concurrent.cc