[horde] user definable arrays in the horde setup tool

[liamr@umich.edu]

I've modified the memcached sessionhandler to use the libmemcache based
extension (http://www.klir.com/~johnm/php-mcache/) instead of the one in PECL
because the one based on libmemcache supports memcache server pools.

So....

I'd like to alter conf.xml and add a configuration block for this new session
handler, and I was wondering if the setup tool provided a method to handle a
user imputted array?  Probably a text area, w/ one server per line?

Liam