[meld] Fix a couple of incorrect direct invocations of git

[Kai Willadsen <kaiw src gnome org>]

commit 3493d98313d66dcec7f9b19074f3ab67305f7c71
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Fri Jan 11 06:14:13 2013 +1000

    Fix a couple of incorrect direct invocations of git

 meld/vc/git.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/meld/vc/git.py b/meld/vc/git.py
index 5684256..aa23b20 100644
--- a/meld/vc/git.py
+++ b/meld/vc/git.py
@@ -91,7 +91,7 @@ class Vc(_vc.CachedVc):
         path = path[len(self.root) + 1:]
 
         obj = commit + ":" + path
-        process = subprocess.Popen(["git", "cat-file", "blob", obj],
+        process = subprocess.Popen([self.CMD, "cat-file", "blob", obj],
                                    cwd=self.location, stdout=subprocess.PIPE,
                                    stderr=subprocess.PIPE)
         vc_file = process.stdout
@@ -122,7 +122,7 @@ class Vc(_vc.CachedVc):
             try:
                 # Update the index before getting status, otherwise we could
                 # be reading stale status information
-                _vc.popen(["git", "update-index", "--refresh"],
+                _vc.popen([self.CMD, "update-index", "--refresh"],
                           cwd=self.location)
 
                 # Get the status of files that are different in the "index" vs