#1549 change visual state of file only if it is not controlled by vcs

[Christo]

For VCS plugins (cbvcs in my case) which want to control the visual state of the file in the projects pane, on editing the file, the state set by vcs plugin is reset by sdk. This patch sets the state only if the file is not actively managed by VCS plugin.

[Morten MacFly]

That annoyed me for a while, too. Thank you, applied in [r13715] .