[1.0.x] Fixed #9972: The dbshell command was ignoring the DATABASE_HOST and...

[1.0.x] Fixed #9972: The dbshell command was ignoring the DATABASE_HOST and DATABASE_PORT settings in Oracle. Backport of [9713] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9716 bcc190cf-cafb-0310-a4f2-bffc1f526a37