include: Make some include guards compatible with MS headers.
[wine] / programs / taskkill /
drwxr-xr-x   ..
-rw-r--r-- 204 Makefile.in
-rw-r--r-- 14655 taskkill.c
-rw-r--r-- 1378 taskkill.h
-rw-r--r-- 2051 taskkill.rc