[Issue 20387] New: pipelink.exe ignores preferred linker

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20387

          Issue ID: 20387
           Summary: pipelink.exe ignores preferred linker
           Product: D
           Version: D2
          Hardware: All
                OS: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: visuald
          Assignee: nobody at puremagic.com
          Reporter: rmanth at gmail.com

I'm using the new LLVM platfrom toolset in visual studio 2019 which works fine
until I do something like "-flto" which is not compatible with link.exe. My
"LinkToolExe" property gets correctly set to lld-link.exe but at the last
moment VisualD overrides it which pipelink.exe which then calls link.exe. 

I think it makes more sense for pipelink.exe to delegate to the whatever is in
"LinkToolExe" before VisualD takes over.

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