build: ignore more stuff in gitignore
build: ignore more stuff in gitignore

plasma-umass/DoubleTake,plasma-umass/DoubleTake,bpowers/DoubleTake,plasma-umass/DoubleTake,bpowers/DoubleTake,plasma-umass/DoubleTake,bpowers/DoubleTake,bpowers/DoubleTake,plasma-umass/DoubleTake,bpowers/DoubleTake,bpowers/DoubleTake,bpowers/DoubleTake,bpowers/DoubleTake,plasma-umass/DoubleTake,plasma-umass/DoubleTake