fix [#26951] blenderplayer and runtimes will not load

blenderplayer wasn't finding bundled python, eg: ./2.57/python/lib

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -1758,6 +1758,7 @@ static struct _inittab bge_internal_modules[]= {
 
 /**
  * Python is not initialised.
+ * see bpy_interface.c's BPY_python_start() which shares the same functionality in blender.
  */
 PyObject* initGamePlayerPythonScripting(const STR_String& progname, TPythonSecurityLevel level, Main *maggie, int argc, char** argv)
 {
@@ -1779,6 +1780,9 @@ PyObject* initGamePlayerPythonScripting(const STR_String& progname, TPythonSecur
 	/* must run before python initializes */
 	PyImport_ExtendInittab(bge_internal_modules);
 
+	/* find local python installation */
+	PyC_SetHomePath(BLI_get_folder(BLENDER_PYTHON, NULL));
+
 	Py_Initialize();
 	
 	if(argv && first_time) { /* browser plugins dont currently set this */