Squashed 'third_party/gperftools/' content from commit 54505f1

Change-Id: Id02e833828732b0efe7dac722b8485279e67c5fa
git-subtree-dir: third_party/gperftools
git-subtree-split: 54505f1d50c2d1f4676f5e87090b64a117fd980e
diff --git a/packages/deb/compat b/packages/deb/compat
new file mode 100644
index 0000000..b8626c4
--- /dev/null
+++ b/packages/deb/compat
@@ -0,0 +1 @@
+4