ref-manual: Edits to the "Images" section.

Added some cross-references to some other parts of the YP
documentation.  Also, re-orderd the list to be alphabetical.

(From yocto-docs rev: c2faf4ab4b9fd0ef2670f5c31deaa933b3119779)

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

documentation/ref-manual/ref-features.xml

@@ -168,7 +168,7 @@
             <filename><link linkend='var-IMAGE_FEATURES'>IMAGE_FEATURES</link></filename>
             and <filename><link linkend='var-EXTRA_IMAGE_FEATURES'>EXTRA_IMAGE_FEATURES</link></filename>
             variables that you typically configure in your image recipes.
-            Through these variables you can add several different
+            Through these variables, you can add several different
             predefined packages such as development utilities or packages with debug
             information needed to investigate application problems or profile applications.
         </para>
@@ -177,6 +177,13 @@
             Current list of
             <filename>IMAGE_FEATURES</filename> contains the following:
             <itemizedlist>
+                <listitem><para><emphasis>dbg-pkgs:</emphasis> Installs debug symbol packages for all packages
+                    installed in a given image.</para></listitem>
+                <listitem><para><emphasis>dev-pkgs:</emphasis> Installs development packages (headers and
+                    extra library links) for all packages installed in a given image.</para></listitem>
+                <listitem><para><emphasis>doc-pkgs:</emphasis> Installs documentation packages for all packages
+                    installed in a given image.</para></listitem>
+                <listitem><para><emphasis>nfs-server:</emphasis> Installs an NFS server.</para></listitem>
                 <listitem><para><emphasis>splash:</emphasis> Enables showing a splash screen during boot.
                     By default, this screen is provided by <filename>psplash</filename>, which does
                     allow customization.
@@ -192,31 +199,32 @@
                     Note that if both the OpenSSH SSH server and the Dropbear minimal SSH server
                     are present in <filename>IMAGE_FEATURES</filename>, then OpenSSH will take
                     precedence and Dropbear will not be installed.</para></listitem>
+                <listitem><para><emphasis>staticdev-pkgs:</emphasis> Installs static development
+                    packages (i.e. static libraries containing <filename>*.a</filename> files) for all
+                    packages installed in a given image.</para></listitem>
+                <listitem><para><emphasis>tools-debug:</emphasis> Installs debugging tools such as
+                    <filename>strace</filename> and <filename>gdb</filename>.
+                    For information on GDB, see the
+                    "<ulink url='&YOCTO_DOCS_DEV_URL;#platdev-gdb-remotedebug'>Debugging With the GNU Project Debugger (GDB) Remotely</ulink>"
+                    section in the Yocto Project Development Manual.
+                    For information on tracing and profiling, see the
+                    <ulink url='&YOCTO_DOCS_PROF_URL;'>Yocto Project Profiling and Tracing Manual</ulink>.
+                    </para></listitem>
+                <listitem><para><emphasis>tools-profile:</emphasis> Installs profiling tools such as
+                    <filename>oprofile</filename>, <filename>exmap</filename>, and
+                    <filename>LTTng</filename>.
+                    For general information on user-space tools, see the
+                    "<ulink url='&YOCTO_DOCS_ADT_URL;#user-space-tools'>User-Space Tools</ulink>"
+                    section in the Yocto Project Application Developer's Guide.</para></listitem>
+                <listitem><para><emphasis>tools-sdk:</emphasis> Installs a full SDK that runs on the device.
+                    </para></listitem>
+                <listitem><para><emphasis>tools-testapps:</emphasis> Installs device testing tools (e.g.
+                    touchscreen debugging).</para></listitem>
                 <listitem><para><emphasis>x11:</emphasis> Installs the X server</para></listitem>
                 <listitem><para><emphasis>x11-base:</emphasis> Installs the X server with a
                     minimal environment.</para></listitem>
                 <listitem><para><emphasis>x11-sato:</emphasis> Installs the OpenedHand Sato environment.
                     </para></listitem>
-                <listitem><para><emphasis>tools-sdk:</emphasis> Installs a full SDK that runs on the device.
-                    </para></listitem>
-                <listitem><para><emphasis>tools-debug:</emphasis> Installs debugging tools such as
-                    <filename>strace</filename> and <filename>gdb</filename>.
-                    </para></listitem>
-                <listitem><para><emphasis>tools-profile:</emphasis> Installs profiling tools such as
-                    <filename>oprofile</filename>, <filename>exmap</filename>, and
-                    <filename>LTTng</filename>.</para></listitem>
-                <listitem><para><emphasis>tools-testapps:</emphasis> Installs device testing tools (e.g.
-                    touchscreen debugging).</para></listitem>
-                <listitem><para><emphasis>nfs-server:</emphasis> Installs an NFS server.</para></listitem>
-                <listitem><para><emphasis>dev-pkgs:</emphasis> Installs development packages (headers and
-                    extra library links) for all packages installed in a given image.</para></listitem>
-                <listitem><para><emphasis>staticdev-pkgs:</emphasis> Installs static development
-                    packages (i.e. static libraries containing <filename>*.a</filename> files) for all
-                    packages installed in a given image.</para></listitem>
-                <listitem><para><emphasis>dbg-pkgs:</emphasis> Installs debug symbol packages for all packages
-                    installed in a given image.</para></listitem>
-                <listitem><para><emphasis>doc-pkgs:</emphasis> Installs documentation packages for all packages
-                    installed in a given image.</para></listitem>
             </itemizedlist>
         </para>
     </section>