Move net.h to include/net/

+ Move net-android.c and net.c to net/
+ Rename net-checksum.c to net/checksum.c
+ Move sockets.h and shaper.h to include/android/
  and sockets.c + shaper.c to android/

+ Move vgafont.h to ui/

Change-Id: I2659a919a316d3f95aac0f9924833eeee4cb5592
diff --git a/tap-win32.c b/tap-win32.c
index ce30a50..6a55a25 100644
--- a/tap-win32.c
+++ b/tap-win32.c
@@ -27,7 +27,7 @@
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 #include "qemu-common.h"
-#include "net.h"
+#include "net/net.h"
 #include "sysemu.h"
 #include <stdio.h>
 #include <windows.h>