Merge System into Support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/unittest/UnitTestMain/TestMain.cpp b/utils/unittest/UnitTestMain/TestMain.cpp
index 805dbd8..4469c03 100644
--- a/utils/unittest/UnitTestMain/TestMain.cpp
+++ b/utils/unittest/UnitTestMain/TestMain.cpp
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Config/config.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Signals.h"
 #include "gtest/gtest.h"