Update makellvm to return correct result code.

llvm-svn: 54756
diff --git a/llvm/utils/makellvm b/llvm/utils/makellvm
index 9c479ef..ae77712 100755
--- a/llvm/utils/makellvm
+++ b/llvm/utils/makellvm
@@ -131,6 +131,7 @@
 
 if ($doit == 1) then
     csh -f -c "$CMD"
+    set pstatus = $?
 else
     echo '(NOT EXECUTING) COMMAND:'
     echo "  $CMD"