knee-multiple-beams fixed

[Erik Sandberg]

Hi,
This bug is fixed in 2.5.11

\version "2.4.0"
\header {
  texidoc = "gapping doesn't take into account if there is more than one beam. 
This example should not be kneed."
  reportedin = "2.3.23"
}

\layout {
  raggedright = ##t
}
\new Staff {
  \override Beam #'auto-knee-gap = #2.0
  \relative c'' {
    a128[ a' b cis d a,]
  }
}