GatewayProviderResolver(s) based on Umbraco's LazyManyObjectsResolverBase.  Wired up resolution in Merchello CoreBootManager.
Merge pull request #509 from rustyswayne/1.0.1

GatewayProviderResolver(s) based on Umbraco's LazyManyObjectsResolverBase.  Wired up resolution in Merchello CoreBootManager.