anchor.diff:  
   :: By default match host to target
   if not defined HOST (
  -    if "%TARGET%"=="CoreCLR" (
  +    if /i "%TARGET%"=="CoreCLR" (
           set HOST=CoreCLR
       ) else (
           set HOST=Desktop
  
positive.code: 
  set RUNTIME_HOST=
  set HOST_SPECIFIED=
  if "%HOST%"=="CoreCLR" (
      set RUNTIME_HOST=%~dp0Tools\CoreRun.exe
      set MSBUILD_CUSTOM_PATH=%~dp0Tools\MSBuild.exe
      set HOST_SPECIFIED=true
  ) else if "%HOST%"=="Desktop" (
      set RUNTIME_HOST=
      set HOST_SPECIFIED=true
  ) else (
  
negative.code: :: Only CoreCLR requires an override--it should use the host
  :: downloaded as part of its NuGet package references, rather
  :: than the possibly-stale one from Tools.
  if /i "%TARGET%"=="CoreCLR" (
      set RUNTIME_HOST="%~dp0bin\Bootstrap\CoreRun.exe"
  )
  
  if /i "%TARGET%"=="CoreCLR" (
      set MSBUILD_CUSTOM_PATH="%~dp0bin\Bootstrap\MSBuild.exe"
  ) else (
      set MSBUILD_CUSTOM_PATH="%~dp0bin\Bootstrap\15.0\Bin\MSBuild.exe"
  