maint: doc and maintainer-check in preparation for 1.17.92.

* configure.ac (AC_INIT): now 1.17.92.
* m4/amversion.m4 (AM_AUTOMAKE_VERSION): 1.17.92 (auto-update).
* HACKING: release wording.
diff --git a/HACKING b/HACKING
index 34f4599..52ca5cd 100644
--- a/HACKING
+++ b/HACKING
@@ -534,7 +534,7 @@
   date.  The maintainer-only target "update-copyright" can help with this.
 
 * Check NEWS; in particular, ensure that all the relevant differences
-  with the last release are included.
+  from the last release are included.
 
 * Update the AC_INIT version number in configure.ac.  Leading up to a
   minor release (x.y), say 1.17, pretests should be numbered from
diff --git a/configure.ac b/configure.ac
index 920e919..761c674 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,7 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 AC_PREREQ([2.69])
-AC_INIT([GNU Automake], [1.17.91], [bug-automake@gnu.org])
+AC_INIT([GNU Automake], [1.17.92], [bug-automake@gnu.org])
 
 AC_CONFIG_SRCDIR([bin/automake.in])
 AC_CONFIG_AUX_DIR([lib])
diff --git a/m4/amversion.m4 b/m4/amversion.m4
index cf2b7bf..847fe22 100644
--- a/m4/amversion.m4
+++ b/m4/amversion.m4
@@ -15,7 +15,7 @@
 [am__api_version='1.17'
 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
 dnl require some minimum version.  Point them to the right macro.
-m4_if([$1], [1.17.91], [],
+m4_if([$1], [1.17.92], [],
       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
 ])
 
@@ -31,7 +31,7 @@
 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
-[AM_AUTOMAKE_VERSION([1.17.91])dnl
+[AM_AUTOMAKE_VERSION([1.17.92])dnl
 m4_ifndef([AC_AUTOCONF_VERSION],
   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])