Designs for better debug info in GCC

[Andi Kleen]

> I don't know why you say that.  ld knows a bit about debugging
> sections, and how to read .debug_line for errors; objdump knows how to
> decode debug info, as does readelf; strip knows how to remove it;
> objcopy how to copy and separate it.

Sorry I mean separate debuginfo, as Ian was refering too.

I actually had a patch once to hack it into objdump for -S and
also into addr2line but it was somewhat ugly and still 
had some problems and I didn't submit it. 

-Andi