fix .gitignore to ignore files generated by build.xml
fix .gitignore to ignore files generated by build.xml
ddebrunner/streamsx.plumbing,ddebrunner/streamsx.plumbing,IBMStreams/streamsx.plumbing,ddebrunner/streamsx.plumbing,IBMStreams/streamsx.plumbing,IBMStreams/streamsx.plumbing,ddebrunner/streamsx.plumbing,IBMStreams/streamsx.plumbing