documentation/Makefile: fixes for missing tarfiles

I had added some edison-specific figures and they needed to
be included in the TARFILE variable for the YP development manual.
The fix now makes the TARFILE variable all-inclusive for all
.PNG files regardless of branch.  Consequently, there can be
some missing files when the manual is made but the errors are okay.
I documented the exceptions above the variable.

(From yocto-docs rev: 500d4102c5496cb834b93378242599715810386a)

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

documentation/Makefile

@@ -66,10 +66,18 @@ XSLTOPTS = --stringparam html.stylesheet style.css \
            --stringparam  section.label.includes.component.label 1 \
            --xinclude
 ALLPREQ = html pdf tarball
-TARFILES = style.css dev-manual.html dev-manual.pdf figures/bsp-dev-flow.png figures/dev-title.png \
+#
+# 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.
+#
+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/source-repos.png figures/yp-download.png \
+           figures/kernel-example-repos.png figures/kernel-example-repos-edison.png \
+           figures/kernel-overview-1.png figures/kernel-overview-2.png \
+           figures/kernel-overview-3.png figures/kernel-overview-3-edison.png \
+           figures/source-repos.png figures/yp-download.png \
            figures/wip.png
 MANUALS = $(DOC)/$(DOC).html $(DOC)/$(DOC).pdf
 FIGURES = figures