regression in key handling

[Paul Pogonyshev]

Hi,

I compiled and installed Emacs from CVS today and found that
S-backspace no longer works as just backspace.  Instead, I get
`S-backspace is not defined'.  This is very annoying during
editing text.  Please fix it.

I really think Emacs would benifit from some automated system
of regression testing, like unit tests or sth. like that.

Paul