util_win32: fix Windows version checking (issue1358)

shell.SHGetPathFromIDList() segfaults when called in Apache.

mercurial/util_win32.py

@@ -245,7 +245,7 b' def system_rcpath_win32():'
 def user_rcpath_win32():
     '''return os-specific hgrc search path to the user dir'''
     userdir = os.path.expanduser('~')
-    if sys.getwindowsversion() != 2 and userdir == '~':
+    if sys.getwindowsversion()[3] != 2 and userdir == '~':
         # We are on win < nt: fetch the APPDATA directory location and use
         # the parent directory as the user home dir.
         appdir = shell.SHGetPathFromIDList(