Renamed A8R8G8B8_2.dds to A8R8G8B8.2.dds.

This fix is needed for further patch to be able to get image format
(subtype) from filename.

Change-Id: I0de72be6c8d1942e6ad63c4d131bd380379a5417
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

tests/auto/dds/tst_qdds.cpp

@@ -109,7 +109,7 @@ void tst_qdds::readImage_data()
     QTest::newRow("46") << QString("RXGB") << QSize(64, 64);
     QTest::newRow("47") << QString("ATI2") << QSize(64, 64);
     QTest::newRow("48") << QString("P4") << QSize(64, 64);
-    QTest::newRow("49") << QString("A8R8G8B8_2") << QSize(64, 32);
+    QTest::newRow("49") << QString("A8R8G8B8.2") << QSize(64, 32);
 }
 
 void tst_qdds::readImage()
@@ -159,7 +159,7 @@ void tst_qdds::testWriteImage_data()
     QTest::addColumn<QSize>("size");
 
     QTest::newRow("1") << QString("A8R8G8B8") << QSize(64, 64);
-    QTest::newRow("2") << QString("A8R8G8B8_2") << QSize(64, 32);
+    QTest::newRow("2") << QString("A8R8G8B8.2") << QSize(64, 32);
 }
 
 void tst_qdds::testWriteImage()

tests/shared/images/dds.qrc

@@ -49,6 +49,6 @@
         <file>dds/YUY2.dds</file>
         <file>dds/RXGB.dds</file>
         <file>dds/ATI2.dds</file>
-        <file>dds/A8R8G8B8_2.dds</file>
+        <file>dds/A8R8G8B8.2.dds</file>
     </qresource>
 </RCC>