[Patch] readelf -c dump archive index like nm -s

[Nick Clifton]

Hi Shen,

> The new patch is attached.

Thank you very much for submitting this revised patch.  I have applied it, 
together with a few tweaks of my own.  Basically all I did was to add some more 
error checking, so the running "readelf -c" on a corrupt archive should not 
cause readelf to crash.  I also changed some of the uses of sizeof in order to 
remove the assumption that "sizeof (unsigned int) == 4".  On some targets this 
is not true.

Cheers
   Nick