Russian and other national languages support

[Walter Bright]

zorran wrote:
> Russian language not working
> in comments and strings by default
> with ANSI coding (code page)
> 
> Compiler write error - "invalid UTF-8 sequence"

D source code is expected to be in Unicode format (like UTF-8). Modern 
editors can be set to generate this format instead of using code pages.

Having the source code in Unicode ensures global portability of the 
source code. If the code is written in one code page, then compiled or 
displayed with a different code page, the result is garbage.