Change name of supertype AbstractRNG?

I think "re-using" the name `AbstractRNG` is not ideal:
`abstract type AbstractRNG{T<:Number} <: Base.Random.AbstractRNG end`

`AbstractRNG` is defined and exported by `Base` and `RandomNumbers`

```
using RandomNumbers
AbstractRNG
```
results in following:
```
WARNING: both RandomNumbers and Base export "AbstractRNG"; uses of it in module Main must be qualified
ERROR: UndefVarError: AbstractRNG not defined
```

Thus code that uses `AbstractRNG` without `RandomNumbers`, will no longer work when `using RandomNumbers`, without explicitly qualifying. i.e. that code will need modifying.

This can be problematic when one doesn't have access to the modules containing references to `AbstractRNG`.

Maybe this is some form of type piracy?