Code Review 7110017: is_headless_jre should be updated to reflect the new,location of awt toolkit libraries

[David Holmes]

Chris,

Thanks for contributing the changes. I've applied them and tested them 
so it is a Thumbs Up from me.

We need one further Reviewer from runtime.

Thanks,
David

On 11/11/2011 9:12 PM, Chris Hegarty wrote:
>
> With the changes proposed by CR 7110002: "Rename xawt/libmawt.so and
> headless/libmawt.so so they can be colocated with libawt",
> os::is_headless_jre() will have to be updated to look for the renamed
> awt toolkit libraries. See the discussion on awt-dev for further
> information:
> http://mail.openjdk.java.net/pipermail/awt-dev/2011-November/002026.html
>
> The check for the motif toolkit can also be removed as the motif based
> toolkit has been removed in JDK7.
>
> Since is_headless_jre is checking is for headless and short circuits
> and returns false ( headed ) if it finds any headed library we can
> just check for the existence of either the new or old library, without
> JDK version specific code. If either exists then it is a headed
> environment.
>
> Webrev:
> http://cr.openjdk.java.net/~dholmes/7110017/webrev/
>
> -Chris.
>
> P.S. Thanks to David Holmes for helping drive this on the vm side.