remove reference to gatekeeper.dec.com ftp.

spelling (DEC called it "TURBOchannel")

clean up NetBSD RCS ID strings

Preliminary CFB support. Does not work as machine's console (for two
reasons: it won't attach as console, and there's currently no way to do
keyboard input on TC machines), and has no real RAMDAC (c

Preliminary CFB support. Does not work as machine's console (for two
reasons: it won't attach as console, and there's currently no way to do
keyboard input on TC machines), and has no real RAMDAC (colormap, cursor,
etc.) support. Digital UNIX does not support CFB frame buffers in the
Alpha, but they appear to work OK (with an appropriate monitor) in my
3000/300.

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