* Travis CI gained a task to format the documentation with both

AsciiDoc and AsciiDoctor.

* Update the C style recommendation for notes for translators, as

recent versions of gettext tools can work with our style of

multi-line comments.

* "git clone --config var=val" is a way to populate the

per-repository configuration file of the new repository, but it did

not work well when val is an empty string. This has been fixed.

* A few codepaths in "checkout" and "am" working on an unborn branch

tried to access an uninitialized piece of memory.

* "git for-each-ref --format=..." with %(HEAD) in the format used to

resolve the HEAD symref as many times as it had processed refs,

which was wasteful, and "git branch" shared the same problem.

* "git interpret-trailers", when used as GIT_EDITOR for "git commit

-v", looked for and appended to a trailer block at the very end,

i.e. at the end of the "diff" output. The command has been

corrected to pay attention to the cut-mark line "commit -v" adds to

the buffer---the real trailer block should appear just before it.

* A test allowed both "git push" and "git receive-pack" on the other

end write their traces into the same file. This is OK on platforms

that allows atomically appending to a file opened with O_APPEND,

but on other platforms led to a mangled output, causing

intermittent test failures. This has been fixed by disabling

traces from "receive-pack" in the test.

* "foo\bar\baz" in "git fetch foo\bar\baz", even though there is no

slashes in it, cannot be a nickname for a remote on Windows, as

that is likely to be a pathname on a local filesystem.

* The "collision detecting" SHA-1 implementation shipped with 2.13

was quite broken on some big-endian platforms and/or platforms that

do not like unaligned fetches. Update to the upstream code which

has already fixed these issues.

* "git am -h" triggered a BUG().

* The interaction of "url.*.insteadOf" and custom URL scheme's

whitelisting is now documented better.