[cairo] Fix OS/2 build

[Peter Weilbacher]

On 13.11.2008 10:38, Behdad Esfahbod wrote:
> Dave Yeo wrote:
>> The only problem with the original (simpler) fix was Behdad rejecting 
>> the original patch.
> 
> That fix doesn't get you far because we have to include os2.h from
> cairo-mutex-type-private.h anyway.  We HAVE to.

But that is a private header and so it doesn't hurt app developers in the
same way.

> I'm going to commit the cairo-os2.h patch.

I often get the impression that you don't want OS/2 people to use cairo.
Before we broken when compiling cairo, now we break when compiling most
cairo apps on OS/2. Not sure this is an improvement.

   Peter.