docs: add CONFIGURATION sections that map to a built-in

Add a CONFIGURATION section to the documentation of various built-ins,
for those cases where the relevant config/NAME.txt describes
configuration that is only used by the relevant built-in documented in
git-NAME.txt. Subsequent commits will handle more complex cases.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-add.txt

@@ -431,6 +431,13 @@ they will make the patch impossible to apply:
 * deleting context or removal lines
 * modifying the contents of context or removal lines
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/add.txt[]
+
 SEE ALSO
 --------
 linkgit:git-status[1]

Documentation/git-am.txt

@@ -261,6 +261,13 @@ This command can run `applypatch-msg`, `pre-applypatch`,
 and `post-applypatch` hooks.  See linkgit:githooks[5] for more
 information.
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/am.txt[]
+
 SEE ALSO
 --------
 linkgit:git-apply[1].

Documentation/git-clean.txt

@@ -133,6 +133,13 @@ help::
 
   Show brief usage of interactive git-clean.
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/clean.txt[]
+
 SEE ALSO
 --------
 linkgit:gitignore[5]

Documentation/git-clone.txt

@@ -363,6 +363,13 @@ $ cd my-linux
 $ git clone --bare -l /home/proj/.git /pub/scm/proj.git
 ------------
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/clone.txt[]
+
 
 GIT
 ---

Documentation/git-commit-graph.txt

@@ -142,6 +142,13 @@ $ git show-ref -s | git commit-graph write --stdin-commits
 $ git rev-parse HEAD | git commit-graph write --stdin-commits --append
 ------------------------------------------------
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/commitgraph.txt[]
+
 
 GIT
 ---

Documentation/git-commit.txt

@@ -557,6 +557,10 @@ The editor used to edit the commit log message will be chosen from the
 `VISUAL` environment variable, or the `EDITOR` environment variable (in that
 order).  See linkgit:git-var[1] for details.
 
+include::includes/cmd-config-section-rest.txt[]
+
+include::config/commit.txt[]
+
 HOOKS
 -----
 This command can run `commit-msg`, `prepare-commit-msg`, `pre-commit`,

Documentation/git-fast-import.txt

@@ -1564,6 +1564,13 @@ operator can use this facility to peek at the objects and refs from an
 import in progress, at the cost of some added running time and worse
 compression.
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/fastimport.txt[]
+
 SEE ALSO
 --------
 linkgit:git-fast-export[1]

Documentation/git-mailinfo.txt

@@ -115,6 +115,13 @@ If no such configuration option has been set, `warn` will be used.
 <patch>::
 	The patch extracted from e-mail.
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/mailinfo.txt[]
+
 GIT
 ---
 Part of the linkgit:git[1] suite

Documentation/git-maintenance.txt

@@ -397,6 +397,13 @@ If you want to customize the background tasks, please rename the tasks
 so future calls to `git maintenance (start|stop)` do not overwrite your
 custom tasks.
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/maintenance.txt[]
+
 
 GIT
 ---

Documentation/git-push.txt

@@ -692,6 +692,13 @@ a `git gc` command on the origin repository.
 
 include::transfer-data-leaks.txt[]
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/push.txt[]
+
 GIT
 ---
 Part of the linkgit:git[1] suite

Documentation/git-revert.txt

@@ -145,6 +145,13 @@ EXAMPLES
 	changes. The revert only modifies the working tree and the
 	index.
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/revert.txt[]
+
 SEE ALSO
 --------
 linkgit:git-cherry-pick[1]

Documentation/git-show-branch.txt

@@ -199,6 +199,13 @@ shows 10 reflog entries going back from the tip as of 1 hour ago.
 Without `--list`, the output also shows how these tips are
 topologically related with each other.
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/showbranch.txt[]
+
 GIT
 ---
 Part of the linkgit:git[1] suite

Documentation/git-stash.txt

@@ -382,6 +382,13 @@ grep commit | cut -d\  -f3 |
 xargs git log --merges --no-walk --grep=WIP
 ----------------------------------------------------------------
 
+CONFIGURATION
+-------------
+
+include::includes/cmd-config-section-all.txt[]
+
+include::config/stash.txt[]
+
 
 SEE ALSO
 --------