Support getters/setters of ES5

[uhop]

Add supercalls and advices for getters and setters of ES5. Evaluate, if it should go in a separate module, or included in existing ones (most likely mini.js).

[uhop]

Commit 0fa5a4c switched to a pre-requisite functional marker for advices. Now we can implement them for getters and setters.

[clubajax]

Do you have docs on how to do getters and setters? I tried this, and it didn't work. It appears to me that DCL overwrites them with standard properties.

dcl(BaseClass, {
get x(){
console.log('getting x does not fire');
...
},
set x (_x){
console.log('setting x does not fire');
...
}
});

[uhop]

I think you are right. I'll speed up the delivery of this ticket, which will handle such things correctly.

[uhop]

Addressed in 2.0.