Fixed #25979 -- Dropped support for PostgreSQL 9.1.

docs/ref/contrib/gis/install/index.txt

@@ -58,7 +58,7 @@ supported versions, and any notes for each of the supported database backends:
 ==================  ==============================  ==================  =========================================
 Database            Library Requirements            Supported Versions  Notes
 ==================  ==============================  ==================  =========================================
-PostgreSQL          GEOS, PROJ.4, PostGIS           9.1+                Requires PostGIS.
+PostgreSQL          GEOS, PROJ.4, PostGIS           9.2+                Requires PostGIS.
 MySQL               GEOS                            5.5+                Not OGC-compliant; :ref:`limited functionality <mysql-spatial-limitations>`.
 Oracle              GEOS                            11.2+               XE not supported.
 SQLite              GEOS, GDAL, PROJ.4, SpatiaLite  3.6.+               Requires SpatiaLite 3.0+, pysqlite2 2.5+

docs/ref/contrib/gis/install/postgis.txt

@@ -56,8 +56,8 @@ Post-installation
 Creating a spatial database
 ---------------------------
 
-PostGIS 2 includes an extension for Postgres 9.1+ that can be used to enable
-spatial functionality::
+PostGIS 2 includes an extension for PostgreSQL that's used to enable spatial
+functionality::
 
     $ createdb  <db name>
     $ psql <db name>

docs/ref/databases.txt

@@ -92,7 +92,7 @@ below for information on how to set up your database correctly.
 PostgreSQL notes
 ================
 
-Django supports PostgreSQL 9.1 and higher. It requires the use of `psycopg2`_
+Django supports PostgreSQL 9.2 and higher. It requires the use of `psycopg2`_
 2.4.5 or higher (or 2.5+ if you want to use :mod:`django.contrib.postgres`).
 
 .. _psycopg2: http://initd.org/psycopg/

docs/releases/1.10.txt

@@ -362,6 +362,12 @@ to use this form::
     admin.site.unregister(User)
     admin.site.register(User, UserAdmin)
 
+Dropped support for PostgreSQL 9.1
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Upstream support for PostgreSQL 9.1 ends in September 2016. As a consequence,
+Django 1.10 sets PostgreSQL 9.2 as the minimum version it officially supports.
+
 Miscellaneous
 ~~~~~~~~~~~~~