use ps ah -e in get_processes()?

[yetyetanotherusername]

Hey,

I'm not quite sure how ps ah works on other systems but on Fedora, it returns only a handful of processes related to the terminal emulator it is called from. This makes it impossible for me to attach to the application I need to debug using pick_process, since it never shows up in the list of processes.

I'm wondering if anybody can see any downsides to adding the -e parameter? Perhaps the less verbose ps a -u "$USER"?

[mfussenegger]

Changed it with #991