Linux Mint not supported by install script

[trevormerritt]

Hi!

I like Linux Mint and wanted to use FireDBG.

Turns out the install script doesn't handle mint.

I'm submitting a PR to address this.

I couldn't find any previous discussion regarding OS support or decisions on the topic so I went ahead and added what I needed to make it work on my LMDE6 system, and then also added the wiring for the 'normal' mint installs.

[billy1624]

Fixed on

• Add Support for Linux Mint #43

Thanks!! @trevormerritt