use forward "/" for internal path and static http, fix issue437

mercurial/filelog.py

@@ -12,8 +12,8 b' demandload(globals(), "os")'
 class filelog(revlog):
     def __init__(self, opener, path, defversion=REVLOG_DEFAULT_VERSION):
         revlog.__init__(self, opener,
-                        os.path.join("data", self.encodedir(path + ".i")),
-                        os.path.join("data", self.encodedir(path + ".d")),
+                        "/".join(("data", self.encodedir(path + ".i"))),
+                        "/".join(("data", self.encodedir(path + ".d"))),
                         defversion)
 
     # This avoids a collision between a file named foo and a dir named

mercurial/statichttprepo.py

@@ -25,7 +25,7 b' def opener(base):'
     """return a function that opens files over http"""
     p = base
     def o(path, mode="r"):
-        f = os.path.join(p, urllib.quote(path))
+        f = "/".join((p, urllib.quote(path)))
         return rangereader(f)
     return o