Fix <stdint.h> bugs

[Jeff Johnston]

Joseph S. Myers wrote:
> The GCC patch has now been approved for 4.5.  Ping on this patch?
>
> On Fri, 28 Nov 2008, Joseph S. Myers wrote:
>
>   
>> newlib's <stdint.h> has a series of failures to conform to C99.  This
>> patch fixes them; in some cases it uses macros that are proposed for
>> GCC 4.5 with my patch
>> <http://gcc.gnu.org/ml/gcc-patches/2008-11/msg00305.html> to get
>> correct values and types in all cases with new enough compilers,
>> falling back where possible to definitions as good as possible for
>> earlier compilers.
>>     
>
>   
Patch applied.

-- Jeff J.