Rendering cleanup

Replaces the reflexive instantiation of the Renderes with a factory
method.

Some optimizations to the renderers to no longer push the whole OpenGL state to the stack.

General cleanup of duplicate code, etc

src/main/java/appeng/block/solids/BlockQuartzGlass.java

@@ -28,7 +28,6 @@ import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
 import appeng.block.AEBaseBlock;
-import appeng.client.render.BaseBlockRender;
 import appeng.client.render.blocks.RenderQuartzGlass;
 import appeng.core.features.AEFeature;
 import appeng.helpers.AEGlassMaterial;
@@ -46,9 +45,9 @@ public class BlockQuartzGlass extends AEBaseBlock
 
 	@Override
 	@SideOnly( Side.CLIENT )
-	public Class<? extends BaseBlockRender> getRenderer()
+	public RenderQuartzGlass getRenderer()
 	{
-		return RenderQuartzGlass.class;
+		return new RenderQuartzGlass();
 	}
 
 	@Override

src/main/java/appeng/block/solids/OreQuartz.java

@@ -31,10 +31,12 @@ import net.minecraft.util.MathHelper;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
+
 import appeng.api.AEApi;
 import appeng.api.exceptions.MissingDefinition;
 import appeng.block.AEBaseBlock;
-import appeng.client.render.BaseBlockRender;
 import appeng.client.render.blocks.RenderQuartzOre;
 import appeng.core.features.AEFeature;
 
@@ -57,9 +59,10 @@ public class OreQuartz extends AEBaseBlock
 	}
 
 	@Override
-	protected Class<? extends BaseBlockRender> getRenderer()
+	@SideOnly( Side.CLIENT )
+	protected RenderQuartzOre getRenderer()
 	{
-		return RenderQuartzOre.class;
+		return new RenderQuartzOre();
 	}
 
 	@Override