Madison police have arrested a 39-year-old Marshall man, accusing him of trying to hire a hit man to kill his ex-girlfriend.  Christopher A. Beierle was taken into custody Sunday night.  He’s charged with solicitation and cocaine possession.  A second man tells investigators the offer was made as the two talked in a bar on Madison’s north side.  The name of the woman Beierle wanted dead hasn’t been released, but police say she’s a Dane County resident in her 20s.