New Location for Steam for Linux Bugs

[Frank]

Bug tracking for the Steam for Linux client has been moved to GitHub. Steam for Linux now has a public repository and an issue tracking system for creating or browsing bugs related to the Steam for Linux client. You will need an existing GitHub account to create a new bug.
For more information on creating a new bug, see README.md, located in the public repository.

Note that this is a bug reporting area for Steam itself, not games. Game bugs should be reported to the game developers.