[mingw]gdb CVS HEAD build error

[Eli Zaretskii]

> Date: Sun, 13 May 2012 21:58:08 -0700
> From: Joel Brobecker <brobecker@adacore.com>
> Cc: asmwarrior <asmwarrior@gmail.com>, gdb@sourceware.org
> 
> Another possible option is to switch to gnulib's printf. I don't know
> if gnulib's configury would detect faulty or incomplete versions of
> printf like here

This is not an incomplete implementation, it's just that we are using
an unportable format specifier.  We should be using what inttypes.h
says (or use LONGEST and plongest).