ref-manual, adt-manual: Minor edits from review.

Fixed some wordings in the ADT manual to remove "Intel-based"
so as not to be biased.

Added "x86" to qualify the types of systems in the toolchain
examples.

Added minor wording to the IMAGE_TYPES variable.

Changed some wording for the IPK_FEED_URIS varilable.

(From yocto-docs rev: 1fa7e0000591bec7e3d0b682df02b95dbee3d4f1)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/adt-manual/adt-prepare.xml

@@ -253,9 +253,9 @@
                             <para>Go into that folder and download the toolchain
                             installer whose name includes the appropriate target
                             architecture.
-                            For example, if your host development system is an
+                            For example, if your host development system is a
-                            Intel-based 64-bit system and you are going to use
+                            64-bit x86 system and you are going to use
-                            your cross-toolchain for an Intel-based 32-bit
+                            your cross-toolchain for a 32-bit x86
                             target, go into the <filename>x86_64</filename>
                             folder and download the following installer:
                             <literallayout class='monospaced'>
@@ -263,7 +263,7 @@
                             </literallayout></para></listitem>
                         <listitem><para>Build your own toolchain installer.
                             For cases where you cannot use an installer
-                            from the download area, you can build your as
+                            from the download area, you can build your own as
                             described in the
                             "<link linkend='optionally-building-a-toolchain-installer'>Optionally Building a Toolchain Installer</link>"
                             section.</para></listitem>
@@ -273,8 +273,8 @@
                     You must change the permissions on the toolchain installer
                     script so that it is executable.</para>
                     <para>The following command shows how to run the installer
-                    given a toolchain tarball for a 64-bit development host
+                    given a toolchain tarball for a 64-bit x86 development host
-                    system and a 32-bit target architecture.
+                    system and a 32-bit x86 target architecture.
                     The example assumes the toolchain installer is located
                     in <filename>~/Downloads/</filename>.
                     <literallayout class='monospaced'>

documentation/ref-manual/ref-variables.xml

@@ -1935,7 +1935,8 @@ Core layer for images cannot be removed
         <glossentry id='var-IMAGE_TYPES'><glossterm>IMAGE_TYPES</glossterm>
             <glossdef>
                 <para>
-                    Specifies the complete list of supported image types:
+                    Specifies the complete list of supported image types
+                    by default:
                     <literallayout class='monospaced'>
      jffs2
      sum.jffs2
@@ -2168,12 +2169,13 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
         <glossentry id='var-IPK_FEED_URIS'><glossterm>IPK_FEED_URIS</glossterm>
             <glossdef>
                 <para>
-                    Helps users set up an additional package feed area on
+                    When the IPK backend is in use and package management
-                    a server for packages you might want to install on a
+                    is enabled on the target, you can use this variable to
-                    target that is running an image.
+                    set up <filename>opkg</filename> in the target image
+                    to point to package feeds on a nominated server.
                     Once the feed is established, you can perform
                     installations or upgrades using the package manager
-                    at runtime (e.g. <filename>opkg</filename>).
+                    at runtime.
                 </para>
             </glossdef>
         </glossentry>