phases: gather the logic for phasesets update in a single method
This logic is duplicated around for no good reason, we gather it in a single
place.
The conditional is the new function are a bit weird as we about going to extend it soon.
@echo off
rem Double-click this file to (re)build Mercurial for Windows in place.
rem Useful for testing and development.
cd ..\..
del /Q mercurial\*.pyd
del /Q mercurial\*.pyc
rmdir /Q /S mercurial\locale
python setup.py build_py -c -d . build_ext -i build_mo
pause