How ANSI can we assume C?

[Andrey Borzenkov <arvidjaar@xxxxxxxxxx>]

As long as widechar support remains conditional, defining wide/non-wide 
versions really becomes nightmare.

Specifically I'd like simply use

#define ZWC(c) L ## c (or even L ## 'c')

and use it everyhere. It is much easier to use than inventing obscure names 
for characters.

-andrey