waf: upgrade to latest waifu master

waf.bat

@@ -1,24 +1,20 @@
 @echo off
 
 rem try fix py2 build
-chcp 1252
+chcp 65001
 set PYTHONIOENCODING=UTF-8
 rem from issue #964
 
 Setlocal EnableDelayedExpansion
 
 rem Check Windows Version
-set TOKEN=tokens=3*
+set TOKEN=tokens=2*
 ver | findstr /i "5\.0\." > nul
 if %ERRORLEVEL% EQU 0 SET TOKEN=tokens=3*
 ver | findstr /i "5\.1\." > nul
 if %ERRORLEVEL% EQU 0 SET TOKEN=tokens=3*
 ver | findstr /i "5\.2\." > nul
 if %ERRORLEVEL% EQU 0 SET TOKEN=tokens=3*
-ver | findstr /i "6\.0\." > nul
-if %ERRORLEVEL% EQU 0 SET TOKEN=tokens=2*
-ver | findstr /i "6\.1\." > nul
-if %ERRORLEVEL% EQU 0 SET TOKEN=tokens=2*
 
 rem Start calculating PYTHON and PYTHON_DIR
 set PYTHON=
@@ -29,7 +25,7 @@ Setlocal EnableDelayedExpansion
 set PYTHON_DIR_OK=FALSE
 set REGPATH=
 
-for %%i in (3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.7 2.6 2.5) do (
+for %%i in (3.10 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.7 2.6 2.5) do (
 for %%j in (HKCU HKLM) do (
 for %%k in (SOFTWARE\Wow6432Node SOFTWARE) do (
 for %%l in (Python\PythonCore IronPython) do (
@@ -88,7 +84,7 @@ rem @echo %PYTHON_DIR%
 
 if "%PYTHON%" == "" (
 rem @echo No Python
-set PYTHON=python
+set PYTHON=py
 goto running
 )