2.5

New Python code: Fixes for Makefile and compat hacks for py 2.3 
Campbell should check though!

source/blender/python/intern/Makefile

@@ -55,6 +55,7 @@ CPPFLAGS += -I../../blenkernel
 CPPFLAGS += -I../../nodes
 CPPFLAGS += -I../../imbuf
 CPPFLAGS += -I../../blenloader
+CPPFLAGS += -I../../windowmanager
 CPPFLAGS += -I../../render/extern/include
 
 # path to the guarded memory allocator

source/blender/python/intern/bpy_compat.h

@@ -55,6 +55,15 @@
 /* older then python 2.5 - define these */
 #if (PY_VERSION_HEX < 0x02050000)
 #define Py_ssize_t ssize_t
+#ifndef Py_RETURN_NONE
+#define Py_RETURN_NONE	return Py_BuildValue("O", Py_None)
+#endif
+#ifndef Py_RETURN_FALSE
+#define Py_RETURN_FALSE  return PyBool_FromLong(0) 
+#endif
+#ifndef Py_RETURN_TRUE
+#define Py_RETURN_TRUE  return PyBool_FromLong(1)
+#endif
 #endif
 
 #endif /* BPY_COMPAT_H__ */

source/blender/python/intern/bpy_idprop.c

@@ -30,6 +30,7 @@
 #include "BKE_idprop.h"
 
 #include "bpy_idprop.h"
+#include "bpy_compat.h"
 
 #include "MEM_guardedalloc.h"