dev-manual: Updated the poky definition in the "Terms" section.

Added some stuff about "poky" meaning the default distribution
when using YP and the poky git repository to build an image.

(From yocto-docs rev: bd534a5bdf405044c8f1a60ee9e251bff2a0e53c)

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

documentation/dev-manual/dev-manual-newbie.xml

@@ -730,18 +730,29 @@
                 A package group is really just another recipe.
                 Because package group files are recipes, they end with the
                 <filename>.bb</filename> filename extension.</para></listitem>
-            <listitem><para id='poky'><emphasis>Poky:</emphasis> The term "poky" can mean several things.
-                In its most general sense, it is an open-source project that was initially developed
-                by OpenedHand.  With OpenedHand, poky was developed off of the existing OpenEmbedded
-                build system becoming a build system for embedded images.
-                After Intel Corporation acquired OpenedHand, the project poky became the basis for
-                the Yocto Project's build system.</para>
-                <para>
-                Within the Yocto Project source repositories, <filename>poky</filename>
-                exists as a separate Git repository
-                that can be cloned to yield a local copy on the host system.
-                Thus, "poky" can refer to the local copy of the Source Directory used to develop within
-                the Yocto Project.</para></listitem>
+            <listitem><para id='poky'><emphasis>Poky:</emphasis>
+                The term "poky" can mean several things.
+                In its most general sense, it is an open-source
+                project that was initially developed by OpenedHand.
+                With OpenedHand, poky was developed off of the existing
+                OpenEmbedded build system becoming a commercially
+                supportable build system for embedded Linux.
+                After Intel Corporation acquired OpenedHand, the
+                project poky became the basis for the Yocto Project's
+                build system.</para>
+                <para>Within the Yocto Project source repositories,
+                <filename>poky</filename> exists as a separate Git
+                repository you can clone to yield a local copy on your
+                host system.
+                Thus, "poky" can refer to the local copy of the Source
+                Directory used for development within the Yocto
+                Project.</para>
+                <para>Finally, "poky" can refer to the default
+                <ulink url='&YOCTO_DOCS_REF_URL;#var-DISTRO'><filename>DISTRO</filename></ulink>
+                (i.e. distribution) created when you use the Yocto
+                Project in conjunction with the
+                <filename>poky</filename> repository to build an image.
+                </para></listitem>
             <listitem><para><emphasis>Recipe:</emphasis>
                 A set of instructions for building packages.
                 A recipe describes where you get source code, which patches