sdk-manual, mega-manual, Makefile: Added new figures

Added a devtool add and devtool modify flow digram.  Updated
the Makefile to support those figures in the tarball creation.

(From yocto-docs rev: b40692065262dee0209329886b6e3a743c32b1bd)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/Makefile

@@ -248,7 +248,8 @@ TARFILES = mega-manual.html mega-style.css figures/yocto-environment.png \
 	figures/devtool-modify-flow.png figures/devtool-upgrade-flow.png \
 	figures/compatible-layers.png figures/import-layer.png figures/new-project.png \
 	figures/sdk-environment.png figures/sdk-installed-standard-sdk-directory.png \
-	figures/sdk-installed-extensible-sdk-directory.png
+	figures/sdk-devtool-add-flow.png figures/sdk-installed-extensible-sdk-directory.png \
+	figures/sdk-devtool-modify-flow.png
 	endif
 
 MANUALS = $(DOC)/$(DOC).html
@@ -291,7 +292,8 @@ XSLTOPTS = --xinclude
 ALLPREQ = html eclipse tarball
 TARFILES = sdk-manual.html sdk-style.css figures/sdk-title.png \
            figures/sdk-environment.png figures/sdk-installed-standard-sdk-directory.png \
-	   figures/sdk-installed-extensible-sdk-directory.png \
+	   figures/sdk-installed-extensible-sdk-directory.png figures/sdk-devtool-add-flow.png \
+	   figures/sdk-devtool-modify-flow.png \
            eclipse
 MANUALS = $(DOC)/$(DOC).html $(DOC)/eclipse
 FIGURES = figures