[dmd-beta] D 1.075 and 2.060 betas 4

[Walter Bright]

http://ftp.digitalmars.com/dmd1beta.zip
http://ftp.digitalmars.com/dmd2beta.zip

Fixes:

> Succeeded to download.
>
> I found a problem in druntime src directory, that object.d and
> object.di does not contains the commit:7ff4fb1 (fix for Issue 8477).
>
> Regards.
>
> Kenji Hara