g:createLink resource="" should allow specifying contollerName

[codeconsole]

Given the following:

class Sample {
    String name
}

class Sample2Controller {
    static scaffold = Sample
}

all the links should work, but they don't. They all end up pointing to /sample/$action

this is due to the resource option in links. This could be fixed by also allowing to override resource with controllerName, but does not perform as expected..

[codeconsole]

https://github.com/grails/grails-gsp/blob/cae0d8182705bf1481ae53c5e2d81511356e4640/grails-plugin-gsp/src/main/groovy/org/grails/plugins/web/taglib/ApplicationTagLib.groovy#L358-L386

[codeconsole]

This is due to a bug in:
https://github.com/grails/grails-core/blob/da8668daa13c9c1b2157535e11986f49615e8a4b/grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/DefaultLinkGenerator.groovy#L169-L192