index: Enhance documentation
index: Fix indentations
reset: Enhance documentation
reset: Introduce git_reset_default()
tests: Remove useless code
Fix MSVC compilation warnings

Fix #1308
removed other references to api.html
Return the matched pathspec pattern in `git_pathspec_match_path`

Instead of returning directly the pattern as the return value, I used an
out parameter, because the function also tests if the passed pathspecs
vector is empty. If yes, it considers that the path "matches", but in
that case there is no matched pattern per se.
diff: add a notify callback to `git_diff__from_iterators`

The callback will be called for each file, just before the `git_delta_t` gets inserted into the diff list.

When the callback:
- returns < 0, the diff process will be aborted
- returns > 0, the delta will not be inserted into the diff list, but the diff process continues
- returns 0, the delta is inserted into the diff list, and the diff process continues
Merge pull request #1249 from yorah/topic/diff-notify-unmatched-pathspecs

diff: Add a callback to notify of diffed files
Fix Windows symlinks
Merge the push report into the refs to avoid a 3rd network call
tests: fix whitespace in refs/rename.c
Merge pull request #1327 from phkelley/development

Merge the push report into the refs to avoid a 3rd network call
Merge pull request #1320 from cscheid/development

removed other references to api.html
Fix -Wmaybe-uninitialized warning
Fix a bug introduced in df93a681 'Merge the push...'
Fix some incorrect MSVC #ifdef's. Fixes #1305
Teach remote branch to return its remote
Teach refspec to transform destination reference to source reference