[Test] Fix reported number of passed tests
[Test] Fix reported number of passed tests

The file used to identify the results of the individual Python 3 tests was being
truncated. Updating it incrementally seems to avoid the problem.

git-svn-id: e76dbe14710aecee1ad27675521492cea2578c83@2875 02a645c2-efd0-11dd-984d-ab748d24aa7e

Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn