POV: Handle non utf-8 imports

* fix default open() encoding from strict system character set to utf-8
ignoring all other characters so Blender should no longer reject exotic
input pov files as mostly user declared names will probably get changed
in that process and likely everywhere the same way.

render_povray/scripting.py

@@ -153,7 +153,8 @@ class ImportPOV(bpy.types.Operator, ImportHelper):
         for file in self.files:
             print("Importing file: " + file.name)
             file_pov = self.directory + file.name
-            for line in open(file_pov):
+            # Ignore any non unicode character
+            for line in open(file_pov, encoding='utf-8', errors='ignore'):
                 string = line.replace("{", " ")
                 string = string.replace("}", " ")
                 string = string.replace("<", " ")
@@ -184,7 +185,7 @@ class ImportPOV(bpy.types.Operator, ImportHelper):
                             ]
                             matrixes[index] = value
                             write_matrix = False
-            for line in open(file_pov):
+            for line in open(file_pov, encoding='utf-8', errors='ignore'):
                 S = line.replace("{", " { ")
                 S = S.replace("}", " } ")
                 S = S.replace(",", " ")