consistency: use util.realpath instead of os.path.realpath where useful stable

consistency: use util.realpath instead of os.path.realpath where useful

exceptions:
  hg: os.path.realpath used before util can be imported
  tests/run-tests.py: may not import mercurial modules

--- a/contrib/shrink-revlog.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/contrib/shrink-revlog.py	Mon Oct 24 13:51:24 2011 +0200
@@ -172,7 +172,7 @@
             raise util.Abort(_('--revlog option must specify the revlog index '
                                'file (*.i), not %s') % opts.get('revlog'))
 
-        indexfn = os.path.realpath(fn)
+        indexfn = util.realpath(fn)
         store = repo.sjoin('')
         if not indexfn.startswith(store):
             raise util.Abort(_('--revlog option must specify a revlog in %s, '

--- a/hgext/convert/darcs.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/hgext/convert/darcs.py	Mon Oct 24 13:51:24 2011 +0200
@@ -45,7 +45,7 @@
         if ElementTree is None:
             raise util.Abort(_("Python ElementTree module is not available"))
 
-        self.path = os.path.realpath(path)
+        self.path = util.realpath(path)
 
         self.lastrev = None
         self.changes = {}

--- a/hgext/convert/gnuarch.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/hgext/convert/gnuarch.py	Mon Oct 24 13:51:24 2011 +0200
@@ -46,7 +46,7 @@
 
         commandline.__init__(self, ui, self.execmd)
 
-        self.path = os.path.realpath(path)
+        self.path = util.realpath(path)
         self.tmppath = None
 
         self.treeversion = None

--- a/hgext/convert/subversion.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/hgext/convert/subversion.py	Mon Oct 24 13:51:24 2011 +0200
@@ -976,7 +976,7 @@
         self.wc = None
         self.cwd = os.getcwd()
 
-        path = os.path.realpath(path)
+        path = util.realpath(path)
 
         created = False
         if os.path.isfile(os.path.join(path, '.svn', 'entries')):

--- a/mercurial/commands.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/mercurial/commands.py	Mon Oct 24 13:51:24 2011 +0200
@@ -344,7 +344,7 @@
         raise util.Abort(_('no working directory: please specify a revision'))
     node = ctx.node()
     dest = cmdutil.makefilename(repo, dest, node)
-    if os.path.realpath(dest) == repo.root:
+    if util.realpath(dest) == repo.root:
         raise util.Abort(_('repository root cannot be destination'))
 
     kind = opts.get('type') or archival.guesskind(dest) or 'files'

--- a/mercurial/hg.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/mercurial/hg.py	Mon Oct 24 13:51:24 2011 +0200
@@ -130,7 +130,7 @@
 
     sharedpath = srcrepo.sharedpath # if our source is already sharing
 
-    root = os.path.realpath(dest)
+    root = util.realpath(dest)
     roothg = os.path.join(root, '.hg')
 
     if os.path.exists(roothg):
@@ -301,7 +301,7 @@
 
         if copy:
             srcrepo.hook('preoutgoing', throw=True, source='clone')
-            hgdir = os.path.realpath(os.path.join(dest, ".hg"))
+            hgdir = util.realpath(os.path.join(dest, ".hg"))
             if not os.path.exists(dest):
                 os.mkdir(dest)
             else:

--- a/mercurial/localrepo.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/mercurial/localrepo.py	Mon Oct 24 13:51:24 2011 +0200
@@ -28,7 +28,7 @@
 
     def __init__(self, baseui, path=None, create=False):
         repo.repository.__init__(self)
-        self.root = os.path.realpath(util.expandpath(path))
+        self.root = util.realpath(util.expandpath(path))
         self.path = os.path.join(self.root, ".hg")
         self.origroot = path
         self.auditor = scmutil.pathauditor(self.root, self._checknested)
@@ -79,7 +79,7 @@
 
         self.sharedpath = self.path
         try:
-            s = os.path.realpath(self.opener.read("sharedpath").rstrip('\n'))
+            s = util.realpath(self.opener.read("sharedpath").rstrip('\n'))
             if not os.path.exists(s):
                 raise error.RepoError(
                     _('.hg/sharedpath points to nonexistent directory %s') % s)

--- a/mercurial/simplemerge.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/mercurial/simplemerge.py	Mon Oct 24 13:51:24 2011 +0200
@@ -430,7 +430,7 @@
     except util.Abort:
         return 1
 
-    local = os.path.realpath(local)
+    local = util.realpath(local)
     if not opts.get('print'):
         opener = scmutil.opener(os.path.dirname(local))
         out = opener(os.path.basename(local), "w", atomictemp=True)

--- a/tests/test-hgwebdir-paths.py	Mon Oct 24 13:54:59 2011 +0200
+++ b/tests/test-hgwebdir-paths.py	Mon Oct 24 13:51:24 2011 +0200
@@ -1,11 +1,11 @@
 import os
-from mercurial import hg, ui
+from mercurial import hg, ui, util
 from mercurial.hgweb.hgwebdir_mod import hgwebdir
 
 os.mkdir('webdir')
 os.chdir('webdir')
 
-webdir = os.path.realpath('.')
+webdir = util.realpath('.')
 
 u = ui.ui()
 hg.repository(u, 'a', create=1)