Android: Added config tests for multimedia on android.

The Android multimedia plug-in requires API level 11 to compile, so the
config test will check and issue a message about the requirement if the
API level can't be satisfied.

Change-Id: I6c21fe1255024e853023bd8168dfa917b00c4c23
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

config.tests/android/main.java

@@ -0,0 +1,6 @@
+import android.graphics.SurfaceTexture;
+
+class BuildTest
+{
+    public static void main(String [] args) { }
+}