documentation/poky-ref-manual: Fixed various references to YP

I did a scrub for "Yocto Project" and found some that could be
changed.

(From yocto-docs rev: 985062b6a9320e8a3ca3d3dafb6516db4fbc5bd5)

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

documentation/poky-ref-manual/ref-structure.xml

@@ -7,10 +7,10 @@
 <title>Reference: Directory Structure</title>
 
 <para>
-    The Yocto Project consists of several components.
+    The <ulink url='source-directory'>source directory</ulink> consists of several components.
     Understanding them and knowing where they are located is key to using the Yocto Project well.
-    This appendix describes the <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>source directory</ulink>
-    and gives information about the various files and directories.
+    This appendix describes the source directory and gives information about the various 
+    files and directories.
 </para>
 
 <para>
@@ -26,7 +26,8 @@
         <title><filename>bitbake/</filename></title>
 
         <para>
-            The Yocto Project includes a copy of BitBake for ease of use.
+            The <ulink url='source-directory'>source directory</ulink>
+            includes a copy of BitBake for ease of use.
             The copy usually matches the current stable BitBake release from the BitBake project. 
             BitBake, a metadata interpreter, reads the Yocto Project metadata and runs the tasks 
             defined by that data. 
@@ -59,7 +60,7 @@
             the source tree is combined with the output.
             The <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>build directory</ulink>
             is created initially when you <filename>source</filename>
-            the Yocto Project environment setup script <filename>oe-init-build-env</filename>.
+            the OpenEmbedded build environment setup script <filename>oe-init-build-env</filename>.
         </para>
 
         <para> 
@@ -90,7 +91,7 @@
         <title><filename>meta/</filename></title>
 
         <para>
-            This directory contains the Yocto Project core metadata. 
+            This directory contains the OpenEmbedded Core metadata. 
             The directory holds machine definitions, the Yocto Project distribution, 
             and the packages that make up a given system.
         </para>
@@ -101,7 +102,7 @@
 
         <para>
             This directory contains recipes for applications and demos that are not part of the 
-            Yocto Project core.
+            OpenEmbedded core.
         </para>
     </section>
 
@@ -142,7 +143,7 @@
         <title><filename>oe-init-build-env</filename></title>
 
         <para>
-            This script sets up the Yocto Project build environment. 
+            This script sets up the OpenEmbedded build environment. 
             Running this script with the <filename>source</filename> command in
             a shell makes changes to <filename>PATH</filename> and sets other core BitBake variables based on the
             current working directory.