removal of cruft from D

[Don]

Walter Bright wrote:
> Bill Baxter wrote:
>>> version(int) is like a programming language with one variable. It's
>>> ridiculous.
>>
>> One variable, and one operator, >=.
>>
>> To be fair, it was clearly intended to refer to the version of the
>> final user's app, not a library version or platform version or
>> anything else.
>>
>> But to assume that only apps have versions, and that >= is the only
>> test you'd ever want to perform is, I agree, pretty silly.
> 
> The way to use it would be:
> 
> version (2)
> {
>     version = HasFeatureX;
>     version = HasFeatureY;
>     version = HasFeatureZ;
> }
> 
> ...
> 
> version (HasFeatureY)
> {
>     ...
> }

You cannot use version(int) inside libraries. You can only use it for 
the app. But it's fairly common to have multiple library versions.