[Windows] Implement new directories hierarchy (#8616)

images/windows/scripts/build/Install-Mingw64.ps1

@@ -0,0 +1,72 @@
+################################################################################
+##  File:  Install-Mingw64.ps1
+##  Desc:  Install GNU tools for Windows
+################################################################################
+
+if (Test-IsWin19) {
+  # If Windows 2019, install version 8.1.0 form sourceforge
+  $baseUrl = "https://sourceforge.net/projects/mingw-w64/files"
+
+  $("mingw32", "mingw64") | ForEach-Object {
+    if ($_ -eq "mingw32") {
+      $url = "$baseUrl/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/8.1.0/threads-posix/dwarf/i686-8.1.0-release-posix-dwarf-rt_v6-rev0.7z/download"
+      $sha256sum = 'adb84b70094c0225dd30187ff995e311d19424b1eb8f60934c60e4903297f946'
+    } elseif ($_ -eq "mingw64") {
+      $url = "$baseUrl/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/8.1.0/threads-posix/seh/x86_64-8.1.0-release-posix-seh-rt_v6-rev0.7z/download"
+      $sha256sum = '853970527b5de4a55ec8ca4d3fd732c00ae1c69974cc930c82604396d43e79f8'
+    } else {
+      throw "Unknown architecture $_"
+    }
+
+    $packagePath = Start-DownloadWithRetry -Url $url -Name "$_.7z"
+    $hash = Get-FileHash -Path $packagePath -Algorithm SHA256
+    if ($hash.Hash -ne $sha256sum) {
+      throw "Checksum verification failed for $packagePath"
+    }
+    Extract-7Zip -Path $packagePath -DestinationPath "C:\"
+
+    # Make a copy of mingw-make.exe to make.exe, which is a more discoverable name
+    # and so the same command line can be used on Windows as on macOS and Linux
+    $path = "C:\$_\bin\mingw32-make.exe" | Get-Item
+    Copy-Item -Path $path -Destination (Join-Path $path.Directory 'make.exe')
+  }
+  
+  Add-MachinePathItem "C:\mingw64\bin"
+
+} else {
+  $version = (Get-ToolsetContent).mingw.version
+  $runtime = (Get-ToolsetContent).mingw.runtime
+
+  $("mingw32", "mingw64") | ForEach-Object {
+    if ($_ -eq "mingw32") {
+      $arch = "i686"
+      $threads = "posix"
+      $exceptions = "dwarf"
+    } elseif ($_ -eq "mingw64") {
+      $arch = "x86_64"
+      $threads = "posix"
+      $exceptions = "seh"
+    } else {
+      throw "Unknown architecture $_"
+    }
+
+    $url = Get-GitHubPackageDownloadUrl `
+      -RepoOwner "niXman" `
+      -RepoName "mingw-builds-binaries" `
+      -BinaryName "" `
+      -Version $version `
+      -UrlFilter "*$arch-{Version}-release-$threads-$exceptions-$runtime-*.7z"
+
+    $packagePath = Start-DownloadWithRetry -Url $url -Name "$_.7z"
+    Extract-7Zip -Path $packagePath -DestinationPath "C:\"
+
+    # Make a copy of mingw-make.exe to make.exe, which is a more discoverable name
+    # and so the same command line can be used on Windows as on macOS and Linux
+    $path = "C:\$_\bin\mingw32-make.exe" | Get-Item
+    Copy-Item -Path $path -Destination (Join-Path $path.Directory 'make.exe')
+  }
+
+  Add-MachinePathItem "C:\mingw64\bin"
+}
+
+Invoke-PesterTests -TestFile "Tools" -TestName "Mingw64"