Replace core language HexStrings with library entity

[Daniel Murphy via Digitalmars-d]

"weaselcat"  wrote in message news:cfxrrvjnhlofsxpxxqpx at forum.dlang.org...

> as an addendum, vibe.d reimplements huge amounts of phobos, is there a 
> reason none of this is ever getting upstreamed?

Some of it is blocked waiting on other parts to be implemented, the rest is 
waiting for someone to champion it.