binutils on mingw/mingw64 large files (>2GB) support

[Nick Clifton]

Hi Vladimir,

> objcopy built for mingw64 silently refuses to handle
> files larger 2GB. The reason - mingw/mingw64 headers
> (sys/stat.h) don't have _FILE_OFFSET_BITS magic.
>
> The patch adding negative file size check is attached.

Thanks very much for submitting this patch.  I have checked it in along 
with this changelog entry.

Cheers

binutils/ChangeLog
2011-01-06  Vladimir Siminov  <sv@sw.ru>

	* bucomm.c (get_file_size): Check for negative sizes and issue a
	warning message if encountered.