Added a preliminary sys/types.h that just includes ktypes.h for now.

Changed other headers to include sys/types.h rather than ktypes.h.
Added a license reference at the beginning of those files.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@840 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/posix/unistd.h

@@ -5,9 +5,7 @@
 */
 
 #include <null.h>
-// ToDo: fix ktypes issue...
-#include <ktypes.h>
-//#include <sys/types.h>
+#include <sys/types.h>
 
 #ifdef __cplusplus
 extern "C" {