Updated all the RTShader materials to the one to be used with Ogre 1.9.
Fixed the RTShader system initialization.

Based on the comment here:
http://www.ogre3d.org/forums/viewtopic.php?p=487445#p487445

This is fixing the fact that the rtshader_system token in materials wasn't recognized.
A few models are already behaving differently concerning the ambient light.

More testing is needed but I'm rather sure normal handling is more or less fixed.
Fixed the remaining warning seen on materials.

The GLSL scripts are still triggering error on runtime, as oln already reported
here: http://www.ogre3d.org/forums/viewtopic.php?f=2&t=66009

But this will have to be dealt with either in another commit, or fixed by Ogre itself.
Mode the claimed tiles and walls arrows less shiny.
Merge pull request #30 from Bertram25/rtshader-fixes

Real Time Shader System fixes
Made use of const string& when possible in the GameMap class.
Danimal's New dormitory texture + new wall texture. Also made the walls colorable.

As discussed with Danimal.
Added support for new Gold Stacks from Danimal.

I also made the goldfullness enum more relevant and commented their use.

I removed the olf gold stack mesh as they really ugly compared to the new ones,
and I replaced one bed being the chest by the stronger gold stacks.

This is looking shiny! :)
Added new and shiny Troll and Rock Golems by Dm3D, prepared by Danimal. :)
Centered the exit pop-up
Fixed an unhandled render request type seen in logs.

The Room Object deletion request wasn't handled.