[rfa] Add cross platform i386 corefile support

[Mark Kettenis]

   Date: Sat, 09 Aug 2003 10:47:13 -0400
   From: Andrew Cagney <ac131313@redhat.com>

   > Hello,
   > 
   > The attached does to the i386 what MichaelL recently did to x86-64 - make the code that reads core files work cross platform.
   > 
   > While this change is independant of the x86-64 change, it does work better when combined with that.
   > 
   > i386 native showed no regressions.  A cross GDB was able to read i386 native generated core files.
   > 
   > Please note that gcore doesn't work cross though - problems in linux-proc.c.  I've filed a bug report.
   > 
   > ok?
   > 6.0?

   Mark, how does this revision look?

This is a step into the direction that I was heading for.  However, I
was envisioning a somewhat more generic approach, suitable for all
i386 ELF targets.  I wasn't planning on having that support in 6.0
though.  Would you mind if I keep your patch around until I implement
that approach?

Mark