An API to locate MSBuild assemblies from an installed Visual Studio location. Use this to ensure that calling the MSBuild API will use the same toolset that a build from Visual Studio or msbuild.exe would.
MSBuild can be loaded from the x86 or x64 folder. Before 17.0, it looked next to the executing assembly in some cases and constructed a path that assumed x86 in others. This overrides the latter assumption to let it find the right MSBuild.
Fixes https://github.com/dotnet/msbuild/issues/6681 for pre-17.0 MSBuild.
MSBuild can be loaded from the x86 or x64 folder. Before 17.0, it looked next to the executing assembly in some cases and constructed a path that assumed x86 in others. This overrides the latter assumption to let it find the right MSBuild.