More information in ctags files

(Actually, I'm not too sure about these changes. I started working on
better ctags support in my Vim configuration, but it didn't work
somehow, and now these changes lay around for months. Therefore, I'll
commit them now. They won't break anything.)
Add a default smbnetfs.conf

It just reads smbnetfs.auth.
MOAR IGNOAR

(Also restructured the .gitignore a bit.)