[ANNOUNCE] Git 1.7.6.4

[Junio C Hamano <gitster@pobox.com>]

The latest maintenance release Git 1.7.6.4 is available but not at the
usual places.

The release tarballs are found at:

    http://code.google.com/p/git-core/downloads/list

and their SHA-1 checksums are:

df91e2c32d6097ab1c9d0edc56dd8cecb4e9b686  git-1.7.6.4.tar.gz
6abd985e24b6585284cef7fae2e3046ba9201356  git-htmldocs-1.7.6.4.tar.gz
c6f6d92f4005a7eccaf89e851c45768c18f7e65a  git-manpages-1.7.6.4.tar.gz

Also the following public repositories all have a copy of the v1.7.6.4
tag and the maint branch that the tag points at:

        url = git://repo.or.cz/alt-git.git
        url = https://code.google.com/p/git-core/
        url = git://git.sourceforge.jp/gitroot/git-core/git.git
        url = git://git-core.git.sourceforge.net/gitroot/git-core/git-core
        url = https://github.com/gitster/git


Git v1.7.6.4 Release Notes
==========================

Fixes since v1.7.6.3
--------------------

 * The error reporting logic of "git am" when the command is fed a file
   whose mail-storage format is unknown was fixed.

 * "git branch --set-upstream @{-1} foo" did not expand @{-1} correctly.

 * "git check-ref-format --print" used to parrot a candidate string that
   began with a slash (e.g. /refs/heads/master) without stripping it, to make
   the result a suitably normalized string the caller can append to "$GIT_DIR/".

 * "git clone" failed to clone locally from a ".git" file that itself
   is not a directory but is a pointer to one.

 * "git clone" from a local repository that borrows from another
   object store using a relative path in its objects/info/alternates
   file did not adjust the alternates in the resulting repository.

 * "git describe --dirty" did not refresh the index before checking the
   state of the working tree files.

 * "git ls-files ../$path" that is run from a subdirectory reported errors
   incorrectly when there is no such path that matches the given pathspec.

 * "git mergetool" could loop forever prompting when nothing can be read
   from the standard input.

Also contains minor fixes and documentation updates.