Issues newly fixed in MPS release 1.105.0

Job Priority Title
job000602 essential Mac OS X 10.2 build fails because "cabs" is already defined
job000668 essential Build procedure uses p4 counter change which is unsafe
job000825 essential mps_arena_unsafe_expose / restore does not work with finalization
job000973 essential MPS doesn't compile under Mac OS X 10.3.4