add '# encoding: utf-8' line in dylink.r2py

this update deals with seattleinstaller fails on directories with non-ASCII characters issue
Update repyhelper.py

applying to all auto-generated files, not dylink.r2py only
Update repyhelper.py
Merge pull request #31 from XuefengHuang/master

add '# encoding: utf-8' line in dylink.r2py