Removed the need of @OPENDUNGEONS_MEDIA_DIR@ + misc things.

I also added the missing octree debug plugin and remove various useless lines.

Part of #367

cmake/config/plugins.cfg.in

@@ -4,7 +4,6 @@
 PluginFolder=@OD_OGRE_PLUGIN_DIR_REL@
 
 # Define plugins
-@OD_COMMENT_D3D@ Plugin=RenderSystem_Direct3D9
 Plugin=RenderSystem_GL
 #Plugin=Plugin_ParticleFX
 

cmake/config/plugins_d.cfg.in

@@ -4,10 +4,12 @@
 PluginFolder=@OD_OGRE_PLUGIN_DIR_DBG@
 
 # Define plugins
-@OD_COMMENT_D3D@ Plugin=RenderSystem_Direct3D9_d
 Plugin=RenderSystem_GL_d
 #Plugin=Plugin_ParticleFX_d
 
 #This is a card specific library, installed on some systems but not on others
 #Cg is also obsolete and nonfree
 #Plugin=Plugin_CgProgramManager_d
+
+#Scene manager
+Plugin=Plugin_OctreeSceneManager_d

cmake/config/resources.cfg.in

@@ -1,18 +1,18 @@
 [Graphics]
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/materials/RTShaderLib
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/materials/RTShaderLib/materials
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/materials/RTShaderLib/GLSL
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/materials/RTShaderLib/Cg
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/materials/scripts
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/materials/textures
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/models
+FileSystem=materials/RTShaderLib
+FileSystem=materials/RTShaderLib/materials
+FileSystem=materials/RTShaderLib/GLSL
+FileSystem=materials/RTShaderLib/GLSL150
+FileSystem=materials/scripts
+FileSystem=materials/textures
+FileSystem=models
 
 [GUI]
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/gui
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/gui/schemas
+FileSystem=gui
+FileSystem=gui/schemas
 
 [Music]
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/music
+FileSystem=music
 
 [Sound]
-FileSystem=@OPENDUNGEONS_MEDIA_DIR@/sounds
+FileSystem=sounds