Update manual pages (2.51.1)

Updated via the `update-git-version-and-manual-pages.yml` GitHub workflow.

Author: dscho

external/docs/asciidoc/00351ddb725c1d3abdad3ac4f328361997c84e9d

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+git-whatchanged(1)
+==================
+
+NAME
+----
+git-whatchanged - Show logs with differences each commit introduces
+
+
+SYNOPSIS
+--------
+[synopsis]
+git whatchanged <option>...
+
+WARNING
+-------
+`git whatchanged` has been deprecated and is scheduled for removal in
+a future version of Git, as it is merely `git log` with different
+defaults.
+
+DESCRIPTION
+-----------
+
+Shows commit logs and diff output each commit introduces.
+
+New users are encouraged to use linkgit:git-log[1] instead.  The
+`whatchanged` command is essentially the same as linkgit:git-log[1]
+but defaults to showing the raw format diff output and skipping merges:
+
+----
+git log --raw --no-merges
+----
+
+The command is primarily kept for historical reasons; fingers of
+many people who learned Git long before `git log` was invented by
+reading the Linux kernel mailing list are trained to type it.
+
+
+Examples
+--------
+`git whatchanged -p v2.6.12.. include/scsi drivers/scsi`::
+
+	Show as patches the commits since version 'v2.6.12' that changed
+	any file in the include/scsi or drivers/scsi subdirectories
+
+`git whatchanged --since="2 weeks ago" -- gitk`::
+
+	Show the changes during the last two weeks to the file 'gitk'.
+	The "--" is necessary to avoid confusion with the *branch* named
+	'gitk'
+
+GIT
+---
+Part of the linkgit:git[1] suite