documentation/kernel-manual/kernel-how-to.xml: edits to tree construction

I made some clarifying edits to the section that describes how
the YP team constructs the kernel repositories (the tree).  There
were some things that just weren't clear.

(From yocto-docs rev: 127f0c8c89ec9b926a4ff348acc39a73f41e6fe7)

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

documentation/kernel-manual/kernel-how-to.xml

@@ -54,15 +54,22 @@
             "<ulink url='http://www.yoctoproject.org/docs/latest/dev-manual/dev-manual.html#local-kernel-files'>Linux Yocto Kernel</ulink>" bulleted item in The Yocto Project Development Manual.
         </para>
         <para>  
-            Once the Git repository is set up on your local machine, you can switch to the 
+            Once you have cloned the kernel Git repository on your local machine, you can 
-            <filename>meta</filename> branch within the repository.
+            switch to the <filename>meta</filename> branch within the repository.
-            Here, you can see a snapshot of all the kernel configuration and feature descriptions that are 
+            Here is an example that assumes the local Git repository for the kernel is in 
-            used to build the kernel repository.
+            a top-level directory named <filename>linux-yocto-3.0</filename>:
+            <literallayout class='monospaced'>
+     $ cd ~/linux-yocto-3.0
+     $ git checkout -b meta origin/meta
+            </literallayout>
+            Once you have checked out and switched to the <filename>meta</filename> branch,
+            you can see a snapshot of all the kernel configuration and feature descriptions that are 
+            used to build that particular kernel repository.
             These descriptions are in the form of <filename>.scc</filename> files. 
         </para>
         <para>
-            You should realize, however, that browsing your local snapshot of feature
+            You should realize, however, that browsing your local kernel repository
-            descriptions and patches is not an effective way to determine what is in a
+            for feature descriptions and patches is not an effective way to determine what is in a
             particular kernel branch. 
             Instead, you should use Git directly to discover the changes in a branch.
             Using Git is an efficient and flexible way to inspect changes to the kernel.  
@@ -76,10 +83,12 @@
             </note>
         </para>
         <para>
-            The following steps describe what happens when the Yocto kernel team constructs
+            The following steps describe what happens when the Yocto Project Team constructs
-            the kernel tree given the introduction of a new top-level kernel feature or BSP. 
+            the Yocto Linux kernel source Git repository (or tree) found at 
-            These are the actions that effectively create the tree that includes the new feature, patch, 
+            <ulink url='http://git.yoctoproject.org/cgit.cgi'></ulink> given the 
-            or BSP:
+            introduction of a new top-level kernel feature or BSP. 
+            These are the actions that effectively create the tree 
+            that includes the new feature, patch or BSP:
             <orderedlist>
                 <listitem><para>A top-level kernel feature is passed to the kernel build subsystem.
                     Normally, this feature is a BSP for a particular kernel type.</para></listitem>