tenor clef key cancellation bug

[David Bobroff]

The following snippet in (CVS v2.7.8 ChangeLog 1.4090) produces odd
output.  The key cancellation is printed on the first space above the
staff whereas the sharp in the initial key signature appeared on the
second line as it should.

1) Shouldn't the cancellation be printed in the same octave as the
original sharp/flat?

2) This just looks plain wrong to me.

3) It only seems to be happening in tenor clef (NOT alto, mezzosoprano,
etc.) and it only seems to be affecting the cancelled f-sharp.  I have
not done extensive testing.

-David

\version "2.7.8"

\score {
  \relative c' {
    \clef "tenor"
    \key g \major
    g1
    \key c \major
    g
  }
}