- Mathutils.Vector assignment wasnt working in the BGE's py api, was using getValue() rather than setValue()

- added GPL header to bpy_interface.c from 2.4x's BPY_interface.c
- warning fixes

source/blender/python/generic/bpy_internal_import.h

@@ -31,6 +31,15 @@
 #ifndef EXPP_bpy_import_h
 #define EXPP_bpy_import_h
 
+/* python redefines :/ */
+#ifdef _POSIX_C_SOURCE
+#undef _POSIX_C_SOURCE
+#endif
+
+#ifdef _XOPEN_SOURCE
+#undef _XOPEN_SOURCE
+#endif
+
 #include <Python.h>
 #include "compile.h"		/* for the PyCodeObject */
 #include "eval.h"		/* for PyEval_EvalCode */