[airstrike] Windows problems

[Ulf Ekström]

> 1. The studio or the compiler doesn't define a INLINE by default.

Good

> 2. The defintion '#define INLINE inline' only work with C++ (/TP)
> 3. For the C compiler (/TC) you could use
>    '#define INLINE ' (ugly) or '#define INLINE __inline'

So the definition of inline in src/core/compat.h should work then?
If not maybe you can change it to something that works? We want to compile
with /TC.

Ulf