Renamed thread.h to pythread.h.
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index f619032..e068872 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -59,7 +59,7 @@
 #include <ctype.h>
 
 #ifdef WITH_THREAD
-#include "thread.h"
+#include "pythread.h"
 #endif
 
 #ifdef MS_WINDOWS
@@ -71,6 +71,10 @@
 #include "myselect.h"
 #endif
 
+#ifdef PYOS_OS2
+#include "myselect.h"
+#endif
+
 #include <tcl.h>
 #include <tk.h>