[PATCH] factor duplicated yamlReader creation

[Rafael Espíndola]

>   TargetInfo may be a object that would be held by the user, when lld is used as an API. I dont think we should change any users data structure

I am not sure I understand. It is an abstract base class. A user
holding a TargetInfo is actually holding one of the implementation and
those are already modified. It is just that now they are modified from
one place.

Cheers,
Rafael