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/proxy/proxy_common.h b/proxy/proxy_common.h
index 5c5789f..0a52810 100644
--- a/proxy/proxy_common.h
+++ b/proxy/proxy_common.h
@@ -12,7 +12,7 @@
 #ifndef _PROXY_COMMON_H_
 #define _PROXY_COMMON_H_
 
-#include "sockets.h"
+#include "android/sockets.h"
 
 #ifdef _WIN32
 #include <winsock2.h>