Log Message:
-----------
Query constructor
Adding initialization of @duration : suppresses warnings for ruby 1.6.8
Modified Files:
--------------
pqa/lib:
pqa.rb (r1.74 -> r1.75)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pqa/pqa/lib/pqa.rb.diff?r1=1.74&r2=1.75)