Normalize items in sys.path when determining where to insert

a new item.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041408

pkg_resources.py

@@ -1915,6 +1915,7 @@ class Distribution(object):
             self.check_version_conflict()
         best, pos = 0, -1
         for p,item in enumerate(path):
+            item = normalize_path(item)
             if loc.startswith(item) and len(item)>best and loc<>item:
                 best, pos = len(item), p
         if pos==-1:
@@ -1924,7 +1925,6 @@ class Distribution(object):
             path.insert(pos,loc)
 
 
-
     def check_version_conflict(self):
         if self.key=='setuptools':
             return      # ignore the inevitable setuptools self-conflicts  :(