Support cooking specific cultures in variants

inc/packageconfig.ps1

@@ -6,6 +6,8 @@ class PackageVariant {
     [string]$Platform
     # Configuration name i.e. Development, Shipping
     [string]$Configuration
+    # List of cultures to cook into this variant. If omitted, use the project packaging settings
+    [array]$Cultures
     # Additional arguments to send to the build command line
     [string]$ExtraBuildArguments
     # Whether to create a zip of this package (default false)

packageconfig_template.json

@@ -21,7 +21,12 @@
             "SteamAppId": "YourSteamAppId",
             "SteamDepotId": "YourWindowsDepotId",
             "Zip": false,
-            "ExtraBuildArguments": "-EnableSteamworks"
+            "ExtraBuildArguments": "-EnableSteamworks",
+            "Cultures": [
+                "en",
+                "fr",
+                "de"
+            ]
         },
         {
             "Name": "PublicWin64Build", 

ue4-package.ps1

@@ -232,6 +232,9 @@ try {
         if ($maps.Count) {
             $argList.Add("-Map=$($maps -join "+")") > $null
         }
+        if ($var.Cultures) {
+            $argList.Add("-cookcultures=$($var.Cultures -join "+")") > $null
+        }
         $argList.Add($var.ExtraBuildArguments) > $null
 
         Write-Output "Building variant:  $($var.Name)"