function tracing from rtld

[Aggelos Economopoulos]

On Sunday 06 January 2008, Simon 'corecode' Schubert wrote:
> Hey,
> 
> on my quest to get firefox/thunderbird working with libthread_xu, 
> Aggelos and me developed a nice hook for rtld to trace function calls in 
> dynamically linked binaries.

To be fair, my part mostly involved questioning the approach and coming up
with objections every step of the way :) While this *is* a useful contribution,
it's still Simon's code.

> What do people think, should we add this to rtld?  It's quite small.

Plus, it opens the door for some cool hacks :)

Aggelos