Non-blocking IO :)
Quit has also been modified to do an actual quit in cases where we need to
flush out any remaining write buffers.
Test system was refactored to make it a bit friendlier...
[brian@zim src]$ ./memslap --concurrency=5 --execute-number=5000 --initial-load=1 --non-blocking --servers=localhost --test=set
Threads connecting to servers 5
Took 10.252 seconds to load data
[brian@zim src]$ ./memslap --concurrency=5 --execute-number=5000 --initial-load=1 --servers=localhost --test=set
Threads connecting to servers 5
Took 200.373 seconds to load data
20 files changed: