[SDL] testfile.c not compiling [patch]

[Sam Lantinga]

> Do you know if "t" mode is used on other platform? because if not, then using 
> "t" with SDL would not be very "portable". But if yes... this would be a "must 
> have".

Like "b" mode, "t" mode is silently ignored on other platforms.

> Something I wanted to use: FileMapping. Because this should be really fast, even 
> when doing a loop with 1 byte access. Slow file access <=> user waits for a game 
> to start :)

> I'm not sure that filemapping can cover all the stdio cases. This is why I 
> didn't try it at the first place. If I manage to get some more time, I could try 
> a test implementation in 1 or 2 weeks

Even 1 byte reads are probably pretty fast, since I'm sure the underlying
Win32 API does buffering at some level. :)

	-Sam Lantinga, Senior Software Engineer, Blizzard Entertainment