Fix issue #2448075: aapt doesn't fix up activity-alias android:targetActivity links

And related:

- The aapt tool now sets a resource configurations sdk level to match any configs
  that have been set (for example if you specify density your sdk level will be
  at least 4).
- New option to modify the targetPackage attribute of instrumentation.
- Clean up of aapt options help.
- Fix of UI type values to leave 0 for "unspecified".
- Make the UI mode config APIs public.
diff --git a/tools/aapt/AaptAssets.cpp b/tools/aapt/AaptAssets.cpp
index 69b2207..6e7a66d 100644
--- a/tools/aapt/AaptAssets.cpp
+++ b/tools/aapt/AaptAssets.cpp
@@ -1133,6 +1133,26 @@
     getNavigationName(navigation.string(), &params);
     getScreenSizeName(screenSize.string(), &params);
     getVersionName(version.string(), &params);
+    
+    // Fix up version number based on specified parameters.
+    int minSdk = 0;
+    if ((params.uiMode&ResTable_config::MASK_UI_MODE_TYPE)
+                != ResTable_config::UI_MODE_TYPE_ANY
+            ||  (params.uiMode&ResTable_config::MASK_UI_MODE_NIGHT)
+                != ResTable_config::UI_MODE_NIGHT_ANY) {
+        minSdk = SDK_FROYO;
+    } else if ((params.screenLayout&ResTable_config::MASK_SCREENSIZE)
+                != ResTable_config::SCREENSIZE_ANY
+            ||  (params.screenLayout&ResTable_config::MASK_SCREENLONG)
+                != ResTable_config::SCREENLONG_ANY
+            || params.density != ResTable_config::DENSITY_DEFAULT) {
+        minSdk = SDK_DONUT;
+    }
+    
+    if (minSdk > params.sdkVersion) {
+        params.sdkVersion = minSdk;
+    }
+    
     return params;
 }