* config.guess: Include <stdio.h> when compiling test programs
with a C++ compiler. Function prototypes are mandatory in C++.
From Ossama Othman <othman@cs.wustl.edu>.
* config.guess: Handle versions of DJGPP's uname(1) command which
return the exact machine type and not just `pc'. From Laurynas
Biveinis <lauras@softhome.net>.
