Improvements in binutils by implementing libaddr2line.a

[Nick Clifton]

Hi Massimo,

> The GNU binutils contains a useful program addr2line that converts addresses
> into filenames and line numbers.
> With an simple extension it is possible to create a library (libaddr2line
> exporting the function convert_addresses(.).

It would probably be cleaner to add this functionality to the bfd library, 
rather than creating a new library just for addr2line.  But I do think that 
exporting this functionality is a good idea.

Would you like to submit a patch to do this ?  Before you do however it would 
be necessary for you to obtain an FSF copyright assignment, so that we are 
allowed to actually look at the patch.

Cheers
   Nick