[PR PATCH] [Closed]: ldb: Fix python bindings to accept a string as a DN

[github at samba.org]

There's a closed pull request on the Samba Samba Github repository

ldb: Fix python bindings to accept a string as a DN
https://github.com/samba-team/samba/pull/21
Description: This fixes add_base(), add_child() and is_child_of().

This removes a toally incorrect cast of struct ldb_dn to struct ldb_context.

A helper routine is used instead

Signed-off-by: Andrew Bartlett <abartlet at samba.org>