MSBuildDebugEngine env var casing

[jjonescz]

It looks like MSBuildDebugEngine is accepted in that exact casing which matters on Unix where env vars are case-sensitive. Unfortunately, Azure DevOps automatically upper-cases global variables when passing them as env vars, so it's impossible to have

variables:
  - name: MSBuildDebugEngine
    value: 1
  - name: MSBUILDDEBUGPATH
    value: $(Build.ArtifactStagingDirectory)/binlogs

without also adding

env:
  MSBuildDebugEngine: $(MSBuildDebugEngine)

to every step in Unix pipelines.

Would it be possible to accept the upper-cased MSBUILDDEBUGENGINE on Unix too?

[rainersigwald]

Yeah I think it's reasonable to accept both.