changed robocopy return code

build/init.cmd

@@ -8,5 +8,18 @@ mkdir dist-azaion
 
 echo Copying shared libs
 robocopy "C:\\share" "dist-dlls" "*"
+set RC=%ERRORLEVEL%
 
-popd
+if %RC% EQU 1 (
+    echo All files copied successfully.
+    popd
+    exit /b 1
+) else if %RC% LSS 8 (
+    echo Robocopy returned %RC% (acceptable non-error code), but not perfect copy.
+    popd
+    exit /b 0
+) else (
+    echo Robocopy failed with code %RC%.
+    popd
+    exit /b %RC%
+)