Synced with 2.4.4

[James S. <jsi...@tr...>]

Hi!


  Just synced our tree with 2.4.4. I have some more improvements coming
this way. Cleaner initalization code. Much finer higher level locking in
the tty layer to deal with the printk DMA/irq issue. Really support for
changing the console resolution. I discovered it can be done via stty.
Note resizing the console is still experimental. I plan to stablize it
this weekend.