[osg-users] Please test OpenSceneGraph master in prep for 3.5.6 dev release

[Robert Osfield]

Hi All,

I have now merged submissions/PR's and resolved all the build and bug
errors I'm aware of, and have updated ChangeLog and AUTHORS.txt for
3.5.6 dev release,so I'm ready to pull the trigger on the dev release.

If anyone has any issues you've seen let me know.  If no problems are
reported I'll make the 3.5.6 dev release later this afternoon.

Cheers,
Robert