config.txt: move am.* to a separate file

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/config.txt

@@ -295,20 +295,7 @@ include::config/add.txt[]
 
 include::config/alias.txt[]
 
-am.keepcr::
-	If true, git-am will call git-mailsplit for patches in mbox format
-	with parameter `--keep-cr`. In this case git-mailsplit will
-	not remove `\r` from lines ending with `\r\n`. Can be overridden
-	by giving `--no-keep-cr` from the command line.
-	See linkgit:git-am[1], linkgit:git-mailsplit[1].
-
-am.threeWay::
-	By default, `git am` will fail if the patch does not apply cleanly. When
-	set to true, this setting tells `git am` to fall back on 3-way merge if
-	the patch records the identity of blobs it is supposed to apply to and
-	we have those blobs available locally (equivalent to giving the `--3way`
-	option from the command line). Defaults to `false`.
-	See linkgit:git-am[1].
+include::config/am.txt[]
 
 apply.ignoreWhitespace::
 	When set to 'change', tells 'git apply' to ignore changes in

Documentation/config/am.txt

@@ -0,0 +1,14 @@
+am.keepcr::
+	If true, git-am will call git-mailsplit for patches in mbox format
+	with parameter `--keep-cr`. In this case git-mailsplit will
+	not remove `\r` from lines ending with `\r\n`. Can be overridden
+	by giving `--no-keep-cr` from the command line.
+	See linkgit:git-am[1], linkgit:git-mailsplit[1].
+
+am.threeWay::
+	By default, `git am` will fail if the patch does not apply cleanly. When
+	set to true, this setting tells `git am` to fall back on 3-way merge if
+	the patch records the identity of blobs it is supposed to apply to and
+	we have those blobs available locally (equivalent to giving the `--3way`
+	option from the command line). Defaults to `false`.
+	See linkgit:git-am[1].