Fixed the portals idle and spawn animation used.

I also fixed a bug making the portal not triggering the Idle animation again
after spawning.

Fixes #390
Readded DirectX renderer support on Windows.

Fixes #389

I also made the manpage documentation file created by cmake ignored by git.
Removed again support for the D3D9 renderer as it is not working.

At least with Ogre 3d 1.9.0.
Merge pull request #391 from Bertram25/development

Fixed the portals idle and spawn animation used