How to set the memcached start-up parameters in Olio's config?

[Mingfan Lu]

I find that, the memcached using the default start-up parameters: -m256 ,
How can I modify the memcached's start-up parameters such as I can set -t ,
-c(max connections) and  others by myself. I find that the source code of
OlioDriver has the interface, but I can't set this in the config file.
-mingfan