ports/137577: Update of math/GiNaC port

[Stephen Montgomery-Smith]

The following reply was made to PR ports/137577; it has been noted by GNATS.

From: Stephen Montgomery-Smith <stephen at missouri.edu>
To: bug-followup at FreeBSD.org, stephen at missouri.edu
Cc:  
Subject: Re: ports/137577: Update of math/GiNaC port
Date: Sat, 08 Aug 2009 13:36:35 -0500

 When I said this replaces "137557" I meant "137556".