Seems that the script was dropped in 0.6.4 as per 
http://lists.fedoraproject.org/pipermail/scm-commits/2010-October/509654.html

The issue seems to be that the functionality to convert SOLiD to FASTQ files is covered in a lot of other tools also with different implementations and slightly different workings. 

There is a C implementation with BFAST, a PERL implementation in BWA <= 0.6.4, and there are several other version that can be found on the web.