Merge memory checking functionality from sandbox

Change-Id: I304c789a752c9f4af4944ca14b9bf1e7644da15a
diff --git a/.gitignore b/.gitignore
index 0db5b03..5a5ea87 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.pyc
+*.*~
 libc/kernel/original