Changes by: Aleksey Nogin (nogin at cs.caltech.edu)
Date: 2006-01-26 00:09:58 -0800 (Thu, 26 Jan 2006)
Revision: 8609
Log message:

      Truncate the "id" number to 31 bits in order to make .prla files written on
      64-bit platforms readable under 32 bits.