Rename build output dir for Acq Engine on Unix

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@13847 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Add a .gitignore file

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@13848 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@13849 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd