Fix creating symlinks in make-macosx-app.sh

Create symlink if arch name is found anywhere in info printed by file command, not only if arch name is the last word.
Fix text getting appended to vid_restart in command buffer

I was getting unknown command "vid_restart-button2" warning on OSX when trying to use alt-return to toggle fullscreen.
Remove 5 unused variables from make-macosx scripts
Merge branch 'master' of https://github.com/ioquake/ioq3