OSX fixes, make memcapable a test.

[m6w6/libmemcached] / support / example.cnf

# http://en.wikipedia.org/wiki/Consistent_hashing
--distribution=consistent

# Store one additional copy on each node.
--number-of-replicas=2
--namespace="my_foo"
--server=localhost:11211
--server=localhost:11212
--server=localhost:11213
--verify-key