Log Message:
Update to 2.4.5

Changelog:
Git v2.4.5 Release Notes
========================

Fixes since v2.4.4
------------------

 * The setup code used to die when core.bare and core.worktree are set
   inconsistently, even for commands that do not need working tree.

 * There was a dead code that used to handle "git pull --tags" and
   show special-cased error message, which was made irrelevant when
   the semantics of the option changed back in Git 1.9 days.

 * "color.diff.plain" was a misnomer; give it 'color.diff.context' as
   a more logical synonym.

 * The configuration reader/writer uses mmap(2) interface to access
   the files; when we find a directory, it barfed with "Out of memory?".

 * Recent "git prune" traverses young unreachable objects to safekeep
   old objects in the reachability chain from them, which sometimes
   showed unnecessary error messages that are alarming.

 * "git rebase -i" fired post-rewrite hook when it shouldn't (namely,
   when it was told to stop sequencing with 'exec' insn).

Also contains typofixes, documentation updates and trivial code
clean-ups.

Git v2.4.4 Release Notes
========================

Fixes since v2.4.3
------------------

 * l10n updates for German.

 * An earlier leakfix to bitmap testing code was incomplete.

 * "git clean pathspec..." tried to lstat(2) and complain even for
   paths outside the given pathspec.

 * Communication between the HTTP server and http_backend process can
   lead to a dead-lock when relaying a large ref negotiation request.
   Diagnose the situation better, and mitigate it by reading such a
   request first into core (to a reasonable limit).

 * The clean/smudge interface did not work well when filtering an
   empty contents (failed and then passed the empty input through).
   It can be argued that a filter that produces anything but empty for
   an empty input is nonsense, but if the user wants to do strange
   things, then why not?

 * Make "git stash something --help" error out, so that users can
   safely say "git stash drop --help".

 * Clarify that "log --raw" and "log --format=raw" are unrelated
   concepts.

 * Catch a programmer mistake to feed a pointer not an array to
   ARRAY_SIZE() macro, by using a couple of GCC extensions.

Also contains typofixes, documentation updates and trivial code
clean-ups.