Support -Qe for listing required packages

[dlintw]

I would like to keep the top level package name.
If this script support -Qe will be better.

[icy]

@NgoHuy Can you please take a look? I haven't found any -Qe support on https://wiki.archlinux.org/index.php/Pacman/Rosetta , but we may write some adhoc scripts to support them.

[NgoHuy]

I found some way to support this behaviour, only for apt and yum. I'm still testing for other.