Built dist from master does not contain package android.util

I've built dist (`make all_dist`) without errors. But when translating sources that uses package `android.util`, for example `SparseArray`, it fails.
```
package android.util does not exist
import android.util.SparseArray;
```
Using other packages like `org.json ` translates successful

Use this command to translate
`"$HOME/j2objc/dist/j2objc" -d "gen" -classpath "$HOME/j2objc/dist/lib/json.jar" --no-package-directories -sourcepath "." "Test.java"`

Comparing with public distribution I've noticed that there is no `libandroid_util.a` in `lib` folder