Revert "try Popen"

This reverts commit efdd46bb18c9616e374ca37dda8f165b35795d7a.
Revert "try a different way to interact with the process"

This reverts commit c9f2a03ad5b85ed4e0e6f83e914f32c99b73f7e7.
remove and ignore python/gulp.spec
goodbye batch.