Some real hardships into building druntime on windows

[Hipreme]

https://wiki.dlang.org/Building_under_Windows#Building_DRuntime

I'm following this wiki for trying to build my own. So, for 
adapting things to my own directory, I made the batch script as:


```bat
call "C:\Program Files (x86)\Microsoft Visual 
Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" x64

set MAKE="%CD%\make.exe"

cd druntime

set VCDIR="C:\Program Files (x86)\Microsoft Visual 
Studio\2019\Community\VC"

%MAKE% -f win64.mak "VCDIR=%VCDIR%" target

```
The output from the dmd's make, is:

"Error: don't know how to make 'Files'"

I'm not using the `-j4` flag, because it says the flag is not 
supported.


Which is actually happening because of the argument 
"VCDIR=%VCDIR%", even though I set the VCDIR using quotations.



If I try to build phobos, I get something like

"Error: don't know how to make 'target'".

I'm using the make `Digital Mars Make Version 5.06                
                                                                   
        Copyright (C) Digital Mars 1985-2012.  All Rights 
Reserved.`

An intentionally older version, as the DMD's make is not released 
on every build, I got it from the archive. Don't we have any kind 
of alternative to that make? Make is like already an alien on 
window's system, it mess up with PATH if someone has msys2 on the 
PC as "make" is a common name, like, it could be "dmdmake" or 
something like that.


I got some really nice options:

  1- Maybe a dedicated tab on the downloads page could be nice.
  2- A newer build system because make on windows is a joke.
  3- Dub?