Print out pk3 and filecount on the same line
Add external_deps to .gitignore
Re-enabled travis for engine-upgrade
Don't use SDL2 for travis
Fix the command completion wrapper and the bind completions
Cmd: make the wrapper handle cgame command completion and avoid spamming 'command %s already exists'
Cmd: Fix the previous commit

Following ZTM's suggestion VM commands are now registered with the VM
specific function (instead of registered with NULL). To make it work without
changing the gamelogic there are some hacks. TODO: check that the gamelogic
registers all the commands and make cgame forward some commands to the server.

All the hacks are my own creation and not ZTM's
Cmd: remove a debug print
Cmd: better mimic the old autocompletion behavior
Cosmetic change to the way cvars and commands are printed
Fix cvar substitution so that it interacts correctly with quoting and other things
Disabled travis again on engine-upgrade because of missing deps
Merge branch 'engine-upgrade/master' into engine-upgrade/filesystem_wip