[PATCH 0/3] x86: compat_siginfo fixes and build-time tests

From: Dave Hansen
Date: Thu May 26 2016 - 14:36:16 EST

We have not been updating the x86 compat_siginfo when updating the
generic one. These patches fix the issue, and then add a bunch
of build-time checks to try to avoid this happening again in the
future (suggested by Ingo).