fixed ltp 32bit tests,
added support to take autogenerated ltp test cases during compile time,
added exit_code support to shell driver agent and runner,
added SKIP test result parsing support to tradefed

Change-Id: I5ba65ff98aa1fdeccbdb7d621d68347352c48060
diff --git a/proto/AndroidSystemControlMessage.proto b/proto/AndroidSystemControlMessage.proto
index 25c2772..3bf6d8d 100644
--- a/proto/AndroidSystemControlMessage.proto
+++ b/proto/AndroidSystemControlMessage.proto
@@ -135,6 +135,7 @@
 
   repeated bytes stdout = 2001;
   repeated bytes stderr = 2002;
+  repeated int32 exit_code = 2003;
 }