& btnumrepjobs()
 
  Syntax: btnumrepjobs(<UnitDB>)
 
  This function returns the number of repair jobs on the unit 
  specified by <UnitDB>
 
  Error Messages:
 
  * If <UnitDB> is not a valid unit the function returns #-1 
 
  Example:
  Given that #1234 is mech with damaged armor on the Left Torso and 
  Right Arm
 
  > think btmumrepjobs(#1234)
  2