Add ability for clientMode to be set from Spring bean resource injection

[rappleg]

Would like the ability to be able to set the clientMode to Static from Grails (Spring) dependency injection to be able to do something like the following when injecting the memcachedClient resource.

memcachedClient(MemcachedClientFactoryBean) {
	clientMode = ClientMode.Static // This is currently being ignored
	protocol = "BINARY"
	opTimeout = 1000
	timeoutExceptionThreshold = 1998
	hashAlg = DefaultHashAlgorithm.KETAMA_HASH
	locatorType = "CONSISTENT"
	failureMode = "Cancel"
	useNagleAlgorithm = false
	transcoder(net.spy.memcached.transcoders.SerializingTranscoder) {
		compressionThreshold = 1024
	}
}

[kklopfenstein]

I've had to extend MemcachedClientFactoryBean locally to achieve this. This seems like a pretty common usecase if you want to use a standard memcached server for local development.

[brunocleite]

Perfect, needed the same here