[PATCH 2 of 3] move a global fcntl import to keep it from breaking jython

[Ronny Pfannschmidt]

# HG changeset patch
# User Ronny Pfannschmidt <Ronny.Pfannschmidt at gmx.de>
# Date 1269338370 -3600
# Node ID 491a4de017e0a698ec33f689a1f0dd9746fe1380
# Parent  a6605991f4ffe90c6ed3681f9ee5ef14539da9d4
move a global fcntl import to keep it from breaking jython

its needed only on darwin anyway

diff --git a/mercurial/posix.py b/mercurial/posix.py
--- a/mercurial/posix.py
+++ b/mercurial/posix.py
@@ -7,7 +7,7 @@
 
 from i18n import _
 import osutil
-import os, sys, errno, stat, getpass, pwd, grp, fcntl
+import os, sys, errno, stat, getpass, pwd, grp
 
 posixfile = open
 nulldev = '/dev/null'
@@ -118,6 +118,7 @@ def samedevice(fpath1, fpath2):
     return st1.st_dev == st2.st_dev
 
 if sys.platform == 'darwin':
+    import fcntl # only needed on darwin, missing on jython
     def realpath(path):
         '''
         Returns the true, canonical file system path equivalent to the given