Make PYENV_DEBUG imply -v for `pyenv install` (#2347)
Make PYENV_DEBUG imply -v for `pyenv install` (#2347)

Trace logs without `-v` are usually useless due to missing the build part.
So this leaves one less thing for users to worry about
when submitting error reports.

Mentioning `-v` in the issue template should stay for some time
since users report on old versions, too.
sebhahn/pyenv,sebhahn/pyenv,pyenv/pyenv,pyenv/pyenv,pyenv/pyenv,sebhahn/pyenv