Git v2.10.1 Release Notes

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Fixes since v2.10

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* Clarify various ways to specify the "revision ranges" in the

documentation.

* "diff-highlight" script (in contrib/) learned to work better with

"git log -p --graph" output.

* The test framework left the number of tests and success/failure

count in the t/test-results directory, keyed by the name of the

test script plus the process ID. The latter however turned out not

to serve any useful purpose. The process ID part of the filename

has been removed.

* Having a submodule whose ".git" repository is somehow corrupt

caused a few commands that recurse into submodules loop forever.

* "git symbolic-ref -d HEAD" happily removes the symbolic ref, but

the resulting repository becomes an invalid one. Teach the command

to forbid removal of HEAD.

* A test spawned a short-lived background process, which sometimes

prevented the test directory from getting removed at the end of the

script on some platforms.

* Update a few tests that used to use GIT_CURL_VERBOSE to use the

newer GIT_TRACE_CURL.

Also contains minor documentation updates and code clean-ups.