Hardcoded path to gateway subdirectory makes extending gateways impossible

[ghidinelli]

The current gateway instantiation looks like:

<cfset variables.instance.gateway = createObject("component", "gateway.#lCase(variables.instance.config.path)#").init(config = variables.instance.config, service = this) />

There are circumstances where you want to extend a gateway to override a particular method, like perhaps for error messages or custom response additions, etc. We have a working build with this instead:

<cfset variables.instance.gateway = createObject("component", variables.instance.config.path).init(config = variables.instance.config, service = this) />

That allows configuration like (coldspring example):

`

</bean>`

But gateway.stripe.stripe could also be model.payment.customstripe which defines an alternative response.