rename ClatUtils to OffloadUtils

Generated via:
  mv server/ClatUtils.h       server/OffloadUtils.h
  mv server/ClatUtils.cpp     server/OffloadUtils.cpp
  mv server/ClatUtilsTest.cpp server/OffloadUtilsTest.cpp
  sed -i -r 's@ClatUtils@OffloadUtils@g' server/OffloadUtils.cpp
  sed -i -r 's@ClatUtils@OffloadUtils@g' server/OffloadUtilsTest.cpp
  sed -i -r 's@ClatUtils@OffloadUtils@g' server/Android.bp
  sed -i -r 's@ClatUtils@OffloadUtils@g' server/ClatdController.cpp

+ sort Android.bp
+ sort include order in server/ClatdController.cpp

Test: build, atest
  'find | egrep ClatUtils' and 'git grep ClatUtils' come up empty
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I33dbfab8241fd378d1d6ab44843bdae17196e2d1
diff --git a/server/ClatdController.cpp b/server/ClatdController.cpp
index 728ae69..cd555d7 100644
--- a/server/ClatdController.cpp
+++ b/server/ClatdController.cpp
@@ -47,10 +47,10 @@
 #include "netutils/checksum.h"
 }
 
-#include "ClatUtils.h"
 #include "Fwmark.h"
 #include "NetdConstants.h"
 #include "NetworkController.h"
+#include "OffloadUtils.h"
 #include "netid_client.h"
 
 static const char* kClatdPath = "/system/bin/clatd";