remove reg files no longer needed after install
Remove trailing space from dir_name; do not rely on setfenv to check for Lua 5.1, this breaks users of 'strict' globals checker
Merge branch 'master' of github.com:keplerproject/luarocks
update installer to work on Lua 5.2
Merge pull request #156 from Tieske/Win_installer_5v2

update windows installer to work on Lua 5.2
Merge pull request #157 from Tieske/cleanup_reg_files

Remove reg files no longer needed after install (Windows)
A simpler approach for reducing output clutter. Closes #158.