Git 2.5.1 发布，分布式版本控制系统

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　　Git 2.5.1 发布，此版本主要是 bug 修复。
　　
　　更新内容如下：
　　* Running an aliased command from a subdirectory when the .git thing
　　in the working tree is a gitfile pointing elsewhere did not work.
　　
　　* Often a fast-import stream builds a new commit on top of the
　　previous commit it built, and it often unconditionally emits a
　　"from" command to specify the first parent, which can be omitted in
　　such a case.
　　
　　* The "rev-parse --parseopt" mode parsed the option specification
　　and the argument hint in a strange way to allow '=' and other
　　special characters in the option name while forbidding them from
　　the argument hint.
　　
　　* A "rebase" replays changes of the local branch on top of something
　　else, as such they are placed in stage #3 and referred to as
　　"theirs", while the changes in the new base, typically a foreign
　　work, are placed in stage #2 and referred to as "ours". 
　　
　　* An experimental "untracked cache" feature used uname(2) in a
　　slightly unportable way.
　　
　　* "sparse checkout" misbehaved for a path that is excluded from the
　　checkout when switching between branches that differ at the path.
　　
　　* The low-level "git send-pack" did not honor 'user.signingkey'
　　configuration variable when sending a signed-push.
　　
　　* An attempt to delete a ref by pushing into a repository whose HEAD
　　symbolic reference points at an unborn branch that cannot be
　　created due to ref D/F conflict
　　
　　* "git subtree" (in contrib/) depended on "git log" output to be
　　stable, which was a no-no. 
　　

　　* "git clone $URL" in recent>　　the code that invents a new repository name incorrectly based on
　　the $URL.
　　
　　* Running tests with the "-x" option to make them verbose had some
　　unpleasant interactions with other features of the test suite.
　　

　　* "git pull" in recent>　　that allows custom path to the --upload-pack=. 
　　
　　* pipe() emulation used in Git for Windows looked at a wrong variable
　　when checking for an error from an _open_osfhandle() call.
　　下载：https://github.com/git/git/archive/v2.5.1.zip。
　　Git是一个开源的分布式版本控制系统，用以有效、高速的处理从很小到非常大的项目版本管理。
　　开源中国 Git 代码托管平台：http://git.oschina.net/