Catch urllib errors for old-http in a nicer way.

mercurial/statichttprepo.py

@@ -15,8 +15,10 b' class rangereader(httprangereader.httpra'
     def read(self, size=None):
         try:
             return httprangereader.httprangereader.read(self, size)
+        except urllib2.HTTPError, inst:
+            raise IOError(None, inst)
         except urllib2.URLError, inst:
-            raise IOError(None, str(inst))
+            raise IOError(None, inst.reason[1])
 
 def opener(base):
     """return a function that opens files over http"""

tests/test-static-http.out

@@ -1,4 +1,4 b''
-abort: <urlopen error (111, 'Connection refused')>
+abort: Connection refused
 255
 ls: copy: No such file or directory
 changeset:   0:61c9426e69fe