When a commit is first set as unintersting and then pushed, we must take
care that we do not put it into the commit list as that makes us return
at least that commit (but maybe more) as we've inserted it into the list
because we have the assumption that we want anything in the commit list.

When we hide a commit which we later push into the revwalk, we do not
handle this well and return commits which we should not.

Entry argument passed to git_index_add_frombuffer() should be const

gitignore: ignore vim swapfiles

Clear temporary buffer when filtering

If we are using a temporary buffer for filtering, be sure to clear
it before using it, in case the file that we are filtering is empty.

squash some leaks

Add a custom param to git_smart_subtransport_definition

WinHTTP for MinGW

note: use a git_buf to return the default namespace

examples: add remote example.

checkout: report correct invalid path

In case of a bad url or other error during the connection setup, we
close the stream via free.

fix changelog

mkdir-ext: Assume directories don't exist; fix all race cases

win32 resource: allow custom comments field in DLL

Allow merges of files (and trees) with whitespace problems/fixes

The smart transport has already take the payload param. For the
sub transport a payload param is useful for the implementer.

clar: update to 08f434d

Update tips fixes

Lower case the include directive of windows header

PERF: In MERGE, lazily compute is_binary

Initialize refs vector in git_remote_update_tips().

Otherwise, bailing out early when ls_to_vector() fails accesses
uninitialized memory.

The caller has otherwise no way to know how long the string will be
allocated or ability to free it.

This fixes #2944.

Add annotated versions of ref-modying functions