Quick fix: Clean up SiteExtensions/build.cmd

- quote all rooted paths
- check `%ERRORLEVEL%` after every `CALL`
- nits:
  - add a few more `ECHO` commands
  - wrap long lines

Author: dougbu

src/SiteExtensions/build.cmd

@@ -1,26 +1,40 @@
 @ECHO OFF
 SET RepoRoot=%~dp0..\..
 
-ECHO Building Microsoft.AspNetCore.Runtime.SiteExtension
-CALL %RepoRoot%\build.cmd -arch x64 -projects %~dp0Runtime\Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj /bl:artifacts/log/SiteExtensions-Runtime-x64.binlog %*
-CALL %RepoRoot%\build.cmd -arch x86 -projects %~dp0Runtime\Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj /bl:artifacts/log/SiteExtensions-Runtime-x86.binlog %*
+ECHO Building x64 Microsoft.AspNetCore.Runtime.SiteExtension
+CALL "%RepoRoot%\build.cmd" -arch x64 -projects "%~dp0Runtime\Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj" ^
+    /bl:artifacts/log/SiteExtensions-Runtime-x86.binlog %*
+IF %ERRORLEVEL% NEQ 0 (
+   EXIT /b %ErrorLevel%
+)
 
+ECHO Building x86 Microsoft.AspNetCore.Runtime.SiteExtension
+CALL "%RepoRoot%\build.cmd" -arch x86 -projects "%~dp0Runtime\Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj" ^
+    /bl:artifacts/log/SiteExtensions-Runtime-x86.binlog %*
 IF %ERRORLEVEL% NEQ 0 (
    EXIT /b %ErrorLevel%
 )
 
-ECHO Building LoggingBranch
-REM /p:DisableTransitiveFrameworkReferences=true is needed to prevent SDK from picking up transitive references to Microsoft.AspNetCore.App as framework references https://github.com/dotnet/sdk/pull/3221
-CALL %RepoRoot%\build.cmd -forceCoreMsbuild -arch x64 -projects %~dp0LoggingBranch\LB.csproj /p:DisableTransitiveFrameworkReferences=true /bl:artifacts/log/SiteExtensions-LoggingBranch-x64.binlog %*
-CALL %RepoRoot%\build.cmd -forceCoreMsbuild -arch x86 -projects %~dp0LoggingBranch\LB.csproj /p:DisableTransitiveFrameworkReferences=true /bl:artifacts/log/SiteExtensions-LoggingBranch-x86.binlog %*
+ECHO Building x64 LoggingBranch
+REM /p:DisableTransitiveFrameworkReferences=true is needed to prevent SDK from picking up transitive references to
+REM Microsoft.AspNetCore.App as framework references https://github.com/dotnet/sdk/pull/3221
+CALL "%RepoRoot%\build.cmd" -forceCoreMsbuild -arch x64 -projects "%~dp0LoggingBranch\LB.csproj" ^
+    /p:DisableTransitiveFrameworkReferences=true /bl:artifacts/log/SiteExtensions-LoggingBranch-x64.binlog %*
+IF %ERRORLEVEL% NEQ 0 (
+   EXIT /b %ErrorLevel%
+)
 
+ECHO Building x86 LoggingBranch
+CALL "%RepoRoot%\build.cmd" -forceCoreMsbuild -arch x86 -projects "%~dp0LoggingBranch\LB.csproj" ^
+    /p:DisableTransitiveFrameworkReferences=true /bl:artifacts/log/SiteExtensions-LoggingBranch-x86.binlog %*
 IF %ERRORLEVEL% NEQ 0 (
    EXIT /b %ErrorLevel%
 )
 
 ECHO Building Microsoft.AspNetCore.AzureAppServices.SiteExtension
-CALL %RepoRoot%\build.cmd -forceCoreMsbuild -projects %~dp0LoggingAggregate\src\Microsoft.AspNetCore.AzureAppServices.SiteExtension\Microsoft.AspNetCore.AzureAppServices.SiteExtension.csproj /bl:artifacts/log/SiteExtensions-LoggingAggregate.binlog %*
-
+CALL "%RepoRoot%\build.cmd" -forceCoreMsbuild -projects ^
+    "%~dp0LoggingAggregate\src\Microsoft.AspNetCore.AzureAppServices.SiteExtension\Microsoft.AspNetCore.AzureAppServices.SiteExtension.csproj" ^
+    /bl:artifacts/log/SiteExtensions-LoggingAggregate.binlog %*
 IF %ERRORLEVEL% NEQ 0 (
    EXIT /b %ErrorLevel%
 )