And my first minor commit ever:

I had forgotten to change some names I hope it does work  now; This is an adaptation of Povray exporter to render with povray 3.7 
if you want more info, there are pdfs in the zip files here on the tracker: https://projects.blender.org/tracker/index.php?func=detail&aid=22717&group_id=153&atid=468

render_povray/__init__.py

@@ -39,8 +39,8 @@ if "bpy" in locals():
 else:
     import bpy
     from bpy.props import *
-    from render_povray_37 import ui
-    from render_povray_37 import render
+    from render_povray import ui
+    from render_povray import render
 
 def register():
     Scene = bpy.types.Scene

render_povray/render.py

@@ -1331,7 +1331,7 @@ def write_pov_ini(filename_ini, filename_pov, filename_image):
 
 
 class PovrayRender(bpy.types.RenderEngine):
-    bl_idname = 'POVRAY_37_RENDER'
+    bl_idname = 'povray_RENDER'
     bl_label = "Povray 3.7"
     DELAY = 0.02
 

render_povray/ui.py

@@ -20,18 +20,18 @@ import bpy
 
 # Use some of the existing buttons.
 import properties_render
-properties_render.RENDER_PT_render.COMPAT_ENGINES.add('POVRAY_37_RENDER')
-properties_render.RENDER_PT_dimensions.COMPAT_ENGINES.add('POVRAY_37_RENDER')
-properties_render.RENDER_PT_antialiasing.COMPAT_ENGINES.add('POVRAY_37_RENDER')
-properties_render.RENDER_PT_output.COMPAT_ENGINES.add('POVRAY_37_RENDER')
+properties_render.RENDER_PT_render.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_render.RENDER_PT_dimensions.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_render.RENDER_PT_antialiasing.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_render.RENDER_PT_output.COMPAT_ENGINES.add('POVRAY_RENDER')
 del properties_render
 
 # Use only a subset of the world panels
 import properties_world
-properties_world.WORLD_PT_preview.COMPAT_ENGINES.add('POVRAY_37_RENDER')
-properties_world.WORLD_PT_context_world.COMPAT_ENGINES.add('POVRAY_37_RENDER')
-properties_world.WORLD_PT_world.COMPAT_ENGINES.add('POVRAY_37_RENDER')
-properties_world.WORLD_PT_mist.COMPAT_ENGINES.add('POVRAY_37_RENDER')
+properties_world.WORLD_PT_preview.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_world.WORLD_PT_context_world.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_world.WORLD_PT_world.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_world.WORLD_PT_mist.COMPAT_ENGINES.add('POVRAY_RENDER')
 del properties_world
 
 # Example of wrapping every class 'as is'
@@ -39,7 +39,7 @@ import properties_material
 for member in dir(properties_material):
     subclass = getattr(properties_material, member)
     try:
-        subclass.COMPAT_ENGINES.add('POVRAY_37_RENDER')
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
     except:
         pass
 del properties_material
@@ -48,7 +48,7 @@ import properties_data_mesh
 for member in dir(properties_data_mesh):
     subclass = getattr(properties_data_mesh, member)
     try:
-        subclass.COMPAT_ENGINES.add('POVRAY_37_RENDER')
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
     except:
         pass
 del properties_data_mesh
@@ -57,7 +57,7 @@ import properties_texture
 for member in dir(properties_texture):
     subclass = getattr(properties_texture, member)
     try:
-        subclass.COMPAT_ENGINES.add('POVRAY_37_RENDER')
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
     except:
         pass
 del properties_texture
@@ -66,7 +66,7 @@ import properties_data_camera
 for member in dir(properties_data_camera):
     subclass = getattr(properties_data_camera, member)
     try:
-        subclass.COMPAT_ENGINES.add('POVRAY_37_RENDER')
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
     except:
         pass
 del properties_data_camera
@@ -75,7 +75,7 @@ import properties_data_lamp
 for member in dir(properties_data_lamp):
     subclass = getattr(properties_data_lamp, member)
     try:
-        subclass.COMPAT_ENGINES.add('POVRAY_37_RENDER')
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
     except:
         pass
 del properties_data_lamp
@@ -108,7 +108,7 @@ class MaterialButtonsPanel():
 ########################################MR######################################
 class MATERIAL_PT_povray_mirrorIOR(MaterialButtonsPanel, bpy.types.Panel):
     bl_label = "IOR Mirror"
-    COMPAT_ENGINES = {'POVRAY_37_RENDER'}
+    COMPAT_ENGINES = {'POVRAY_RENDER'}
 
     def draw_header(self, context):
         scene = context.material
@@ -134,7 +134,7 @@ class MATERIAL_PT_povray_mirrorIOR(MaterialButtonsPanel, bpy.types.Panel):
 
 class MATERIAL_PT_povray_metallic(MaterialButtonsPanel, bpy.types.Panel):
     bl_label = "metallic Mirror"
-    COMPAT_ENGINES = {'POVRAY_37_RENDER'}
+    COMPAT_ENGINES = {'POVRAY_RENDER'}
 
     def draw_header(self, context):
         scene = context.material
@@ -149,7 +149,7 @@ class MATERIAL_PT_povray_metallic(MaterialButtonsPanel, bpy.types.Panel):
 
 class MATERIAL_PT_povray_conserve_energy(MaterialButtonsPanel, bpy.types.Panel):
     bl_label = "conserve energy"
-    COMPAT_ENGINES = {'POVRAY_37_RENDER'}
+    COMPAT_ENGINES = {'POVRAY_RENDER'}
 
     def draw_header(self, context):
         mat = context.material
@@ -164,7 +164,7 @@ class MATERIAL_PT_povray_conserve_energy(MaterialButtonsPanel, bpy.types.Panel):
 
 class MATERIAL_PT_povray_iridescence(MaterialButtonsPanel, bpy.types.Panel):
     bl_label = "iridescence"
-    COMPAT_ENGINES = {'POVRAY_37_RENDER'}
+    COMPAT_ENGINES = {'POVRAY_RENDER'}
 
     def draw_header(self, context):
         mat = context.material
@@ -188,7 +188,7 @@ class MATERIAL_PT_povray_iridescence(MaterialButtonsPanel, bpy.types.Panel):
 
 class MATERIAL_PT_povray_caustics(MaterialButtonsPanel, bpy.types.Panel):
     bl_label = "Caustics"
-    COMPAT_ENGINES = {'POVRAY_37_RENDER'}
+    COMPAT_ENGINES = {'POVRAY_RENDER'}
 
 
     def draw_header(self, context):
@@ -240,7 +240,7 @@ class MATERIAL_PT_povray_caustics(MaterialButtonsPanel, bpy.types.Panel):
 
 class RENDER_PT_povray_radiosity(RenderButtonsPanel, bpy.types.Panel):
     bl_label = "Radiosity"
-    COMPAT_ENGINES = {'POVRAY_37_RENDER'}
+    COMPAT_ENGINES = {'POVRAY_RENDER'}
 
     def draw_header(self, context):
         scene = context.scene