shortcut to combine selfupdate and upgrade outdated

[eiked]

Hi everyone at macports

I'd like to suggest to add a newshortcut command as a convenience

That shortcut should call in sequence:

• port selfupdate
• port upgrade outdated

Depending on your taste, that shortcut should have a short name, I'd vote for "port up"

That command could possibly have a -i (interactive) flag, which would call "port outdated" after the selfupdate and ask for yes/no confirmation before applying the "upgrade outdated"

When run with the -v (verbose) flag, it should also call "port outdated" after selfupdate but before upgrade to display the outdated candidates before the upgrade starts.