- Turns on selfFreeing for basically everything, including the repository
- Ignores all git_*_free calls
- Adds ownerFn info used to make associative ownership links between objects that have an exposed link to the repository
- Added isSingleton flag for repository, this adds reference counting to the repo address externally so that no matter how many v8 objects point to it, only the last GC'd v8 object will free the repository.
- Added an "ownedBy" field for arguments to enable ownership linking to arbitrary parameters, not just "this"
- Some additional clean up of things that don't exist or shouldn't exist

- Implements isSingleton behavior with reference counting
- Implements ownerFn, which ties an arbitrary pointer to a singleton type pointer
- always calls free, even if object is "owned", the ownership link is about keeping internal pointers alive, but it seems that most calls to free are reference counted in libgit2, but the repository has a different relationship than all other types of ref counted frees.

I know we will need this in the future for merge drivers and the like. But for now, this will at least show how it could be done.

It looks like this is pretty important to preserve, as it broke tests on windows immediately when removing it.

Because we are no longer exposing free methods in javascript land, we will need to manually perform this method at the C++ layer.

Changes minimum support version of MacOS to 10.9.

co-authored-by: Steve King <stevek@axosoft.com>

co-authored-by: Steve King <stevek@axosoft.com>

We walked the entire file and compared documentation + struct implementation to try and glean ownership relationships between out parameters and arguments.

Since we had to walk this whole file, and it took about 2 1/2 days, we also spent a little bit of time touching up groupings, definitions, and ignore settings.

…ost-everything

Garbage collection: Free mostly everything automatically