Make sure we use compat/subprocess.py with Python 2.3 while running tests.
Make sure we use compat/subprocess.py with Python 2.3 while running tests.

Otherwise the test will not succeed without installing.

Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git