debuggerd: advance our amazing bet.

Remove debuggerd in favor of a helper process that gets execed by
crashing processes.

Bug: http://b/30705528
Test: debuggerd_test
Change-Id: I9906c69473989cbf7fe5ea6cccf9a9c563d75906
diff --git a/debuggerd/tombstoned/tombstoned.rc b/debuggerd/tombstoned/tombstoned.rc
new file mode 100644
index 0000000..3aacf33
--- /dev/null
+++ b/debuggerd/tombstoned/tombstoned.rc
@@ -0,0 +1,9 @@
+service tombstoned /system/bin/tombstoned
+    class core
+
+    user tombstoned
+    group system
+
+    socket tombstoned_crash seqpacket 0666 system system
+    socket tombstoned_intercept seqpacket 0666 system system
+    writepid /dev/cpuset/system-background/tasks