winedbg: Properly fix the previous patch about gcc 2.95 not supporting printf attribute on function pointers.

kernel32: Reject a format string with insertions if no variadic arguments are passed to FormatMessageA/W.

wined3d: Allow the ARB shader backend to work with GL implementations with low amounts of native parameters.

Fixes a crash that occurs when the extension foreign key points to nowhere.
Reported by Vincent Pelletier.