OK, I've split this change into three patches. The cumulative affect
of these is:

kpress() is now much more straightforward and has no memcpy() calls.

selnotify() now supports MODE_ECHO. I couldn't remove the cast there however.

A new ttysend() function replaces all ttywrite();techo() sequences.

     -Mark

Attachment: 0001-Simplify-Mod1-logic-in-kpress-eliminating-locals-and.patch
Description: Binary data

Attachment: 0002-Avoid-buffer-overrun-in-kpress-and-remove-limit-on-s.patch
Description: Binary data

Attachment: 0003-New-ttysend-function-calls-ttywrite-and-techo.patch
Description: Binary data

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