Corrected bl_info for 2.65 exporter as well [1][2], replaced != and == ...

...by "is not" and "is" if comparing with None.

[1] https://projects.blender.org/scm/viewvc.php?view=rev&root=bf-extensions&revision=3086

[2] https://projects.blender.org/scm/viewvc.php?view=rev&root=bf-extensions&revision=4078


Sorry for the earlier, incomplete pull request! Github did not allow me to edit multiple files online, I'm now using TortoiseGit locally.