The return of threading errors in ogg123

[James Van Artsdalen]

> From: Adriaan de Groot <adridg at cs.kun.nl>
> Date: Tue, 24 Feb 2004 21:11:33 +0100
> 
> looks like the stack-16-alignment has gotten broken again somewhere.

Hack the gcc function epilogue code to test %rsp before each return and branch
to abort if stack is mis-aligned, or, maybe load 8(%rsp) to %xmm7 or something like
that to force a fault.  That will get you close to the scene of the crime, and flush
out others that aren't near FP code.