Android: statically load iconv library

Fixes #3291

Thanks to @arpruss for reporting the bug, and suggesting the fix.

Also, remove trailing whitespaces.

build/android/src/net/minetest/minetest/MtNativeActivity.java

@@ -12,23 +12,23 @@ public class MtNativeActivity extends NativeActivity {
 		super.onCreate(savedInstanceState);
 		m_MessagReturnCode = -1;
 		m_MessageReturnValue = "";
-		
+
 	}
 
 	@Override
 	public void onDestroy() {
 		super.onDestroy();
 	}
-	
-	
+
+
 	public void copyAssets() {
 		Intent intent = new Intent(this, MinetestAssetCopy.class);
 		startActivity(intent);
 	}
-	
+
 	public void showDialog(String acceptButton, String hint, String current,
 			int editType) {
-		
+
 		Intent intent = new Intent(this, MinetestTextEntry.class);
 		Bundle params = new Bundle();
 		params.putString("acceptButton", acceptButton);
@@ -40,37 +40,37 @@ public class MtNativeActivity extends NativeActivity {
 		m_MessageReturnValue = "";
 		m_MessagReturnCode   = -1;
 	}
-	
+
 	public static native void putMessageBoxResult(String text);
-	
+
 	/* ugly code to workaround putMessageBoxResult not beeing found */
 	public int getDialogState() {
 		return m_MessagReturnCode;
 	}
-	
+
 	public String getDialogValue() {
 		m_MessagReturnCode = -1;
 		return m_MessageReturnValue;
 	}
-	
+
 	public float getDensity() {
 		return getResources().getDisplayMetrics().density;
 	}
-	
+
 	public int getDisplayWidth() {
 		return getResources().getDisplayMetrics().widthPixels;
 	}
-	
+
 	public int getDisplayHeight() {
 		return getResources().getDisplayMetrics().heightPixels;
 	}
-	
+
 	@Override
 	protected void onActivityResult(int requestCode, int resultCode,
 			Intent data) {
 		if (requestCode == 101) {
 			if (resultCode == RESULT_OK) {
-				String text = data.getStringExtra("text"); 
+				String text = data.getStringExtra("text");
 				m_MessagReturnCode = 0;
 				m_MessageReturnValue = text;
 			}
@@ -79,7 +79,7 @@ public class MtNativeActivity extends NativeActivity {
 			}
 		}
 	}
-	
+
 	static {
 		System.loadLibrary("openal");
 		System.loadLibrary("ogg");
@@ -87,13 +87,14 @@ public class MtNativeActivity extends NativeActivity {
 		System.loadLibrary("ssl");
 		System.loadLibrary("crypto");
 		System.loadLibrary("gmp");
+		System.loadLibrary("iconv");
 
 		// We don't have to load libminetest.so ourselves,
 		// but if we do, we get nicer logcat errors when
 		// loading fails.
 		System.loadLibrary("minetest");
 	}
-	
+
 	private int m_MessagReturnCode;
 	private String m_MessageReturnValue;
 }