Export Advanced Ctags Annotations

[eapache]

Exuberant ctags defines a bunch of additional fields starting with a ;" that can be used to embed additional information in a tag file, see section 6 of: http://ctags.sourceforge.net/FORMAT

Most if not all of the required information is in the starscope db already, we just need to translate it appropriately.

[eapache]

Turns out that most of the required information is not in the db already, so this is much more work than I thought. The infrastructure is in place now, but the actual tags themselves will have to wait until post-1.0.

[eapache]

Did the language tag in 97ab099 because I wanted to use it with YouCompleteMe (which requires that tag). Still lots others to do, but not a priority.