This moves enough code into python with CFFI to pass the test_remotes
unit tests. There is no credentials support yet.
There is a small change in the return value of Remote.fetch() in that we
now return a TransferProgress object instead of extracting a few values
into a dictionary.
There is no more MergeResult type. Instead, the user can use
Repository.merge_analysis() to get an overview of their options and call
git_merge() when they mean to merge.
The git_merge() function now also performs a checkout.
The type of a config value depends on the tool that interprets
it. Parsing eagerly can lead to a situation where we return a bool
instead of a string or a number.
Let the user specify the type themselves by passing in a (str, type)
tuple into the mapping interface.
This patch is mostly about making sure that we free the copies of what
we have, as well as making sure that we can free it.
The IndexEntry forgot to free its path, but it also used a pointer to
python-owned memory, which could be freed at any time.
MergeResult completely lacked a deallocator.
Signature needs to make sure we can free the enocoding, and not to set
an owner when we own the memory (in this case for the default
signature).
The repository needs to get rid of its reference to the object list when
returning.
The transfer progress callback needs to decref the stats object.
When a class is a base type, it must use its type's tp_free function to
trigger the real free, instead of PyObjec_Del().
We do not always follow this convention, so let's give it a once-over
and make sure we do that or that it's not a base type. Many of the types
have the flag set in the struct, but do not pass the allocator function
at init time, which makes them not really be a base. Remove the flag for
those types.
The docs say to use tp_free() to free the memory, and even though we use
PyObject_Del() everywhere else, using this in the credentials does cause
issues.
It claims you need to checkout a branch after clone, which is not the
case currently (the clone function will do it for you).
While here, format the docstring for sphinx to make it pretty.
Until we have successfully borrowed the message, we have not used up any
resources, we can skip jumping to 'out' and we can return NULL
directly. This also avoid dereferencing an uninitialised 'tmessage'.
