Replace backticks with repr() or "%r"

From SF patch #852334.
diff --git a/Lib/xml/dom/domreg.py b/Lib/xml/dom/domreg.py
index 117ca49..684c436 100644
--- a/Lib/xml/dom/domreg.py
+++ b/Lib/xml/dom/domreg.py
@@ -87,7 +87,7 @@
     while i < length:
         feature = parts[i]
         if feature[0] in "0123456789":
-            raise ValueError, "bad feature name: " + `feature`
+            raise ValueError, "bad feature name: %r" % (feature,)
         i = i + 1
         version = None
         if i < length:
diff --git a/Lib/xml/dom/minidom.py b/Lib/xml/dom/minidom.py
index a5ebe5f..f17578b 100644
--- a/Lib/xml/dom/minidom.py
+++ b/Lib/xml/dom/minidom.py
@@ -622,9 +622,9 @@
 
     def __repr__(self):
         if self.namespace:
-            return "<TypeInfo %s (from %s)>" % (`self.name`, `self.namespace`)
+            return "<TypeInfo %r (from %r)>" % (self.name, self.namespace)
         else:
-            return "<TypeInfo %s>" % `self.name`
+            return "<TypeInfo %r>" % self.name
 
     def _get_name(self):
         return self.name
diff --git a/Lib/xml/dom/xmlbuilder.py b/Lib/xml/dom/xmlbuilder.py
index fd43c37..5c04412 100644
--- a/Lib/xml/dom/xmlbuilder.py
+++ b/Lib/xml/dom/xmlbuilder.py
@@ -81,7 +81,7 @@
                 settings = self._settings[(_name_xform(name), state)]
             except KeyError:
                 raise xml.dom.NotSupportedErr(
-                    "unsupported feature: " + `name`)
+                    "unsupported feature: %r" % (name,))
             else:
                 for name, value in settings:
                     setattr(self._options, name, value)