Initial support for BCP47 tags

- needs script/variant support
- currently only region(s) supported

brut.apktool/apktool-lib/src/test/java/brut/androlib/BuildAndDecodeTest.java

@@ -182,6 +182,11 @@ public class BuildAndDecodeTest {
         compareValuesFiles("values-watch/strings.xml");
     }
 
+    @Test
+    public void bcp47tagTest() throws BrutException, IOException {
+        compareValuesFiles("values-ast-rES/strings.xml");
+    }
+
     @Test
     public void drawableNoDpiTest() throws BrutException, IOException {
         compareResFolder("drawable-nodpi");

brut.apktool/apktool-lib/src/test/resources/brut/apktool/testapp/res/values-ast-rES/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="test1">test1</string>
+</resources>