virtualenv 21.15.1 on Python PyPI

Keep the name of a seeded console_scripts entry that contains digits but does not end in a version, such as python3-config or 2to3, instead of truncating it at the first digit; python3-config overwrote the environment's python executable (#3451) by @JingHao-Leon and @gaborbernat.
Copy the content of a symlinked directory when a tree is copied into an environment, instead of dropping it (#3454) by @JingHao-Leon and @gaborbernat.
Count each -v, -q, -p and --try-first-with option once instead of once per internal parsing pass, so Session.verbosity is 3 rather than 9 for a single -v (#3457) by @darrenhuai and @gaborbernat.
Copy the seed packages instead of failing when VIRTUALENV_SYMLINK_APP_DATA or symlink_app_data in the config file turns on symlink seeding on a host that cannot create symlinks, such as Windows without the symlink privilege (#3465) by @darrenhuai and @gaborbernat.
Run the interpreter that collects the target debug information (-vv output and Creator.debug) without PYTHONPATH and with the environment passed to cli_run, so the reported sys.path no longer lists the caller's PYTHONPATH entries (#3474) by @RaphaelFakhri and @gaborbernat.