array parameters handling

See the patch to enable array type parameters handling (node.load 'fields' parameter for example).
I think the only reason it didn't work was nusoap's case-sensitive type matching.
This is the nusoap's code excerpt responsible for it:

				if ($uqType == 'Array') {

					// JBoss/Axis does this sometimes

					return $this->serialize_val($value, $name, false, false, false, false, $use);

				}

So the patch just transforms all 'array' type entries to 'Array'.