Orphaning libunwind

[Kevin Kofler]

Josh Boyer wrote:
> Yes, I'm aware of that.  At the moment, it is found because the library
> is in Fedora.  However, I don't want to build 3.7 perf against a library
> that is orphaned and clearly not really supported.  So I'm going to
> disable it with NO_LIBUNWIND=1 and we can revisit perf with unwind
> support for the 3.8 kernel when elf-utils is ready.
> 
> Basically, if something better is going to come along the next version
> then I really don't see a reason to ship the already obsolete and
> orphaned support today.

And I don't see a reason not to. The update to 3.8 will switch to the 
supported library and we will be all set. So there's no point in disabling 
the feature in 3.7.

        Kevin Kofler