documentation: release-specific figure needed for denzil in dev-manual

dev-manual/dev-manual-model.xml:  The Bare Clone and Copy of the Bare
Clone figures are out of date for denzil.  These needed to be
re-done so they use "linux-yocto-3.2.git" and "my-linux-yocto-3.0-work"
as the root names.  This presents a Makefile issue when making the
denzil and pre-denzil versions of the manuals.  Whenever you use a
different figure for a different release, you need to involve the
BRANCH variable in the Makefile.  This is necessary because you are
using different figures in the generated tarballs.  The set of figures
could be unique to the release.  The outdated figure is
"kernel-overview-3.png" and will eventually be removed (later commit).
I created a new figure named "kernel-overview-3-denzil.png" and used
that in the dev-manual-model.xml file.

documentation/Makefile:  I updated the Makefile to test for a
"denzil" release build and if so include the new file in the
generated tarball.  This commit adds the new .PNG file as well.
Fixed the Makefile so that if you don't supply a BRANCH value, it
uses the latest figures (denzil).

(From yocto-docs rev: b3550d7640343cd5459efb04c591b81a1e41bc1b)

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

documentation/Makefile

@@ -82,7 +82,8 @@ ALLPREQ = html pdf tarball
 #
 # Note that the tarfile might produce the "Cannot stat: No such file or directory" error
 # message for .PNG files that are not present when building a particular branch.  The 
-# list of files is all-inclusive for all branches.
+# list of files is all-inclusive for all branches.  Note, if you don't provide a BRANCH
+# option, it defaults to the latest stuff.  This would be appropriate for "master" branch.
 #
 
 	ifeq ($(BRANCH),edison)
@@ -94,13 +95,22 @@ TARFILES = style.css dev-manual.html dev-manual.pdf \
            figures/kernel-overview-3-edison.png \
            figures/source-repos.png figures/yp-download.png \
            figures/wip.png
-	else
+	else ifeq ($(BRANCH),denzil)
 TARFILES = style.css dev-manual.html dev-manual.pdf \
            figures/app-dev-flow.png figures/bsp-dev-flow.png figures/dev-title.png \
            figures/git-workflow.png figures/index-downloads.png figures/kernel-dev-flow.png \
            figures/kernel-example-repos.png \
            figures/kernel-overview-1.png figures/kernel-overview-2.png \
-           figures/kernel-overview-3.png \
+           figures/kernel-overview-3-denzil.png \
+           figures/source-repos.png figures/yp-download.png \
+           figures/wip.png
+        else
+TARFILES = style.css dev-manual.html dev-manual.pdf \
+           figures/app-dev-flow.png figures/bsp-dev-flow.png figures/dev-title.png \
+           figures/git-workflow.png figures/index-downloads.png figures/kernel-dev-flow.png \
+           figures/kernel-example-repos.png \
+           figures/kernel-overview-1.png figures/kernel-overview-2.png \
+           figures/kernel-overview-3-denzil.png \
            figures/source-repos.png figures/yp-download.png \
            figures/wip.png
 	endif

documentation/dev-manual/dev-manual-model.xml

@@ -336,7 +336,7 @@
             </para>
 
             <para>
-                <imagedata fileref="figures/kernel-overview-3.png" 
+                <imagedata fileref="figures/kernel-overview-3-denzil.png" 
                     width="6in" depth="4in" align="center" scale="100" />
             </para>