Fixed premature closing of stdout/stderr streams, which caused plenty of errors.

The lines were added in commit b38020a , and I might consider a patch release soon
or get ready with 0.3.3. Lets hope not too many installations will be affected.

Author: Byron

git/cmd.py

@@ -106,8 +106,6 @@ 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