refactor source tree organization, switch to meson

src/api-impl/android/support/v4/app/FragmentActivity.java

@@ -0,0 +1,34 @@
+package android.support.v4.app;
+
+import android.os.Bundle;
+import android.app.Activity;
+
+public class FragmentActivity extends Activity {
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+	}
+
+	protected void onStart() {
+		super.onStart();
+	}
+
+	protected void onRestart() {
+		super.onRestart();
+	}
+
+	protected void onResume() {
+		super.onResume();
+	}
+
+	protected void onPause() {
+		super.onPause();
+	}
+
+	protected void onStop() {
+		super.onStop();
+	}
+
+	protected void onDestroy() {
+		super.onDestroy();
+	}
+}