Fix fd leak on git cmd.

Currently if command is called with as_proces=True, pipes for the
command will not be closed.

This change makes sure to close command file descriptors.

Conflicts:
	git/cmd.py

Author: sugi

git/cmd.py

@@ -73,6 +73,9 @@ def __init__(self, proc, args ):
             self.args = args
 
         def __del__(self):
+            self.proc.stdout.close()
+            self.proc.stderr.close()
+
             # did the process finish already so we have a return code ?
             if self.proc.poll() is not None:
                 return
@@ -100,6 +103,8 @@ def wait(self):
             
             :raise GitCommandError: if the return status is not 0"""
             status = self.proc.wait()
+            self.proc.stdout.close()
+            self.proc.stderr.close()
             if status != 0:
                 raise GitCommandError(self.args, status, self.proc.stderr.read())
             # END status handling