RFR: JDK-8179225: Update graphviz bundle script with up to date build instructions

[Tim Bell]

Erik:

> The make/devkit/createGraphvizBundle.sh script documents how we create a
> more or less standalone bundle with the dot command. It was discovered
> that this bundle wasn't as standalone as it could be and this was fixed
> by adding some more libraries to the bundle. This change updates the
> script the reflect these updated build instructions.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8179225

Looks good to me.

Tim

> Patch:
>
> diff -r 35017c286513 make/devkit/createGraphvizBundle.sh
> --- a/make/devkit/createGraphvizBundle.sh
> +++ b/make/devkit/createGraphvizBundle.sh
> @@ -39,6 +39,7 @@
>  wget
> http://www.graphviz.org/pub/graphviz/stable/redhat/el6/x86_64/os/graphviz-libs-$GRAPHVIZ_VERSION.el6.x86_64.rpm
>
>  wget
> http://www.graphviz.org/pub/graphviz/stable/redhat/el6/x86_64/os/graphviz-plugins-core-$GRAPHVIZ_VERSION.el6.x86_64.rpm
>
>  wget
> http://www.graphviz.org/pub/graphviz/stable/redhat/el6/x86_64/os/graphviz-plugins-x-$GRAPHVIZ_VERSION.el6.x86_64.rpm
>
> +wget
> http://public-yum.oracle.com/repo/OracleLinux/OL6/latest/x86_64/getPackage/libtool-ltdl-2.2.6-15.5.el6.x86_64.rpm
>
>
>  mkdir graphviz
>  cd graphviz