remove reload() from builtins since python3 no longer uses this.

use imp.reload now.

Should use import hooks but for now replace imp.reload with our own reload as the builtin reload was replaced before.

release/scripts/modules/bpy/utils.py

@@ -140,6 +140,7 @@ def load_scripts(reload_scripts=False, refresh_scripts=False):
                 traceback.print_exc()
 
     def test_reload(mod):
+        import imp
         # reloading this causes internal errors
         # because the classes from this module are stored internally
         # possibly to refresh internal references too but for now, best not to.
@@ -147,7 +148,7 @@ def load_scripts(reload_scripts=False, refresh_scripts=False):
             return mod
 
         try:
-            return reload(mod)
+            return imp.reload(mod)
         except:
             traceback.print_exc()
 
@@ -365,6 +366,7 @@ def addon_enable(module_name, default_set=True):
     import os
     import sys
     import bpy_types as _bpy_types
+    import imp
 
 
     _bpy_types._register_immediate = False
@@ -385,7 +387,7 @@ def addon_enable(module_name, default_set=True):
             print("module changed on disk:", mod.__file__, "reloading...")
 
             try:
-                reload(mod)
+                imp.reload(mod)
             except:
                 handle_error()
                 del sys.modules[module_name]
@@ -477,7 +479,8 @@ def addon_reset_all(reload_scripts=False):
     """
     Sets the addon state based on the user preferences.
     """
-    
+    import imp
+
     # RELEASE SCRIPTS: official scripts distributed in Blender releases
     paths = script_paths("addons")
     
@@ -496,7 +499,7 @@ def addon_reset_all(reload_scripts=False):
             if reload_scripts:
                 mod = _sys.modules.get(mod_name)
                 if mod:
-                    reload(mod)
+                    imp.reload(mod)
 
             if is_enabled == is_loaded:
                 pass