PATCH: don't sign-extend address in ihex files

[DJ Delorie]

This is OK, but needs to be posted to gcc-patches@gcc.gnu.org and
approved there.

> libiberty/ChangeLog:
> 2003-05-14  Jim Blandy  <jimb@redhat.com>
> 
> 	* hex.c (_hex_value): Make this unsigned.
> 	(hex_value): Update documentation for new return type.  hex_value
> 	now expands to an unsigned int expression, to avoid unexpected
> 	sign extension when we store it in a bfd_vma, which is larger than
> 	int on some platforms.
> 	* functions.texi: Regenerated.
> 
> include/ChangeLog:
> 2003-05-14  Jim Blandy  <jimb@redhat.com>
> 
> 	* libiberty.h (hex_value): Make the value an unsigned int, to
> 	avoid unexpected sign-extension when cast to unsigned types larger
> 	than int --- like bfd_vma, on some platforms.
> 	(_hex_value): Update declaration.