[PATCH] os: use libunwind to generate backtraces

[Julien Cristau]

On Sat, Feb 16, 2013 at 16:45:54 +0100, Marcin Slusarz wrote:

> Libunwind generates backtraces much more reliably than glibc's "backtrace".
> 
mind adding an example in the commit message (before/after)?

Thanks,
Julien