Add more includes of w32api headers.
* include/winnt.h (GetCurrentFiber): Change __inline to __inline__.
Swap asm code with that of GetFiberData.
(GetFiberData): Ditto.
* lib/kernels.c: New file, containing library versions of
GetCurrentFiber and GetFiberData.
* lib/makefile.in: Add kernel32.o as static object to libkernal32.a.