Update the description for the graphical installers

Remove references to "one click", as we're not supposed to call
them that anymore.

doc/src/sgml/install-windows.sgml

@@ -10,7 +10,7 @@
 
  <para>
   It is recommended that most users download the binary distribution for
-  Windows, available as a one-click installer package
+  Windows, available as a graphical installer package
   from the <productname>PostgreSQL</productname> website. Building from source
   is only intended for people developing <productname>PostgreSQL</productname>
   or extensions.

doc/src/sgml/pgupgrade.sgml

@@ -206,7 +206,7 @@
     <para>
      If you are using a version-specific installation directory, e.g.
      <filename>/opt/PostgreSQL/9.1</>, you do not need to move the old cluster. The
-     one-click installers all use version-specific installation directories.
+     graphical installers all use version-specific installation directories.
     </para>
 
     <para>
@@ -629,10 +629,10 @@ psql --username postgres --file script.sql postgres
 
   <para>
    For Windows users, note that due to different integer datetimes settings
-   used by the one-click installer and the MSI installer, it is only
-   possible to upgrade from version 8.3 of the one-click distribution to
-   version 8.4 or later of the one-click distribution. It is not
-   possible to upgrade from the MSI installer to the one-click installer.
+   used by the graphical installer and the MSI installer, it is only
+   possible to upgrade from version 8.3 of the installer distribution to
+   version 8.4 or later of the installer distribution. It is not
+   possible to upgrade from the MSI installer to the new graphical installer.
   </para>
 
  </refsect2>