DIP 1003: remove `body` as a keyword

[Meta via Digitalmars-d-announce]

On Sunday, 11 December 2016 at 11:33:40 UTC, Basile B. wrote:
> DIP 1003 is faddish. It would really be better to have a system 
> that would allow any keyword to be used as identifier. An 
> escape system is the key.

It would also guarantee that the DIP would not be accepted. With 
this DIP I aimed for the smallest possible change that would 
alleviate the problem of not being able to use `body` as a symbol 
name, hoping that the smallness of the problem and ease of 
implementation would make it much more likely to be accepted.