[Gnash-dev] updating the copyright date

[Rob Savoye]

Now that New Year's has passed, we have to update the copyright date in
all of the GPL'd Gnash files. While this a semi automatable task, it
always seems to require some manual intervention. As this is a
reasonably simple (but often time consuming) task, I thought I'd see if
I could talk anyone else into making this minor, but important change

As I also started the release process this morning, this same change
would have to be applied to the new release_0_8_9 branch. I'll get
around to this change eventually before the release goes out, but it
sure would be nice to be able to focus on the other release tasks...

        - rob -