CVS commit by trueg: 

handle writing speeds in KB/s internally
when determining supported writing speeds also display speeds like 2.4x


  M +3 -3      k3bcdrdaowriter.cpp   1.16
  M +3 -2      k3bcdrecordwriter.cpp   1.22
  M +2 -2      k3bemptydiscwaiter.cpp   1.15
  M +1 -3      k3bgrowisofswriter.cpp   1.26
  M +53 -42    k3bwriterselectionwidget.cpp   1.15
  M +3 -2      k3bwriterselectionwidget.h   1.4
  M +1 -3      datadvd/k3bgrowisofsimager.cpp   1.24